International Centre for Radio Astronomy Research   Visiting Associate Professor

2012.2 - 2013.1

National Astronomical Observatory of Japan   Mizusawa VLBI Observatory   Visiting Associate Professor

2011.4 - 2012.3

National Astronomical Observatory of Japan   Space VLBI Promotion Office   Visiting Associate Professor

2010.4 - 2011.3

- Associate Professor,

2009

- 鹿児島大学 大学院理工学研究科 准教授

2009

Kagoshima University   Research Field in Science, Science and Engineering Area Graduate School of Science and Engineering (Science) Physics and Astronomy Course   Associate Professor

2008.3 - 2018.3

Kagoshima University   Research Field in Science, Science and Engineering Area Graduate School of Science and Engineering (Science) Physics and Astronomy Course   Assistant Professor

2003.9 - 2008.2

Joint Institute for VLBI in Europe   Support Scientist

2002.4 - 2003.8

Long Baseline Interferometry in Europe

Japan VLBI Consortinum

1994.4

国立天文台ALMA科学諮問委員会   委員  

2018.8 - 2020.7   

国立天文台VLBI科学諮問委員会VLBIプログラム小委員会   委員長  

2018.8 - 2020.7   

国立天文台電波天文周波数委員会   委員  

2018.8 - 2020.7   

  Officer of VLBI Advisory Committee  

2016.8 - 2018.7   

NAOJ VLBI Time Allocation Committee   Committee Chair  

2016.8 - 2018.7   

NAOJ VLBI Advisory Committee   Officer  

2016.8 - 2018.7   

NAOJ ALMA Science Advisory Committee   Officer  

2014.8 - 2018.7   

  Officer  

2014.8 - 2016.7   

  Officer  

2010.7 - 2012.6   

  Officer  

2009.5 - 2012.12   

NAOJ VLBI Time Allocation Committee   Officer  

2008.7 - 2016.7   

International Astronomical Union Symposium 242 Organization Committee   Science Organization Committee Member  

2006.5 - 2007.3   

Japan VLBI Consortinum   officer  

2006.1 - 2009.12   

NAOJ Radio Astronomy Frequncy Management Committee   Officer  

2004.8 - 2018.7   

Japan Radio Astronomy Forum   Management Officer  

2004.4 - 2011.9   

Tsutsumi, Toshihisa; Niinuma, Kotaro; Imai Hiroshi; Amari, Ryoko; Shimizu, Yusuke Shimizu; Ogawa, Hideo; Nishimura, Atsushi; Miyazawa, Chieko; Oyama, Tomoaki; kaneko, Hiroyuki; Nakashima, Keisuke; Sawada-Satoh, Satoko; Aoki, Takahiro Aoki .  HINOTORI and Its Perspectives in the Black-Hole Jet Study .  Galaxies11   30   2023.2HINOTORI and Its Perspectives in the Black-Hole Jet StudyReviewed

Sakai, Nobuyuki;, Zhang, Bo; Xu, Shuangjing; Sakai, Daisuke; Tamura, Yoshiaki; Jike, Takaaki; Jung, Taehyun; Oh, Chungsik; Kim, Jeong-Sook; Kawaguchi, Noriyuki; Imai, Hiroshi; Jiang, Wu; Cui, Lang; Kim, Soon-Wook; JIANG, Pengfei, KURAYAMA, Tomoharu; Lee, Jeong Ae; Hachisuka, Kazuya; Jung, Dong-Kyu; Xia, Bo; Li, Guanghui; Honma Mareki; Kim, Kee-Tae; Shen, Zhi-Qiang; Wang, Na Wang .  EAVN Astrometry toward the Extreme Outer Galaxy: Kinematic distance with the proper motion of G034.84−00.95 .  Publications of the Astronomical Society of Japan75   208 - 224   2023.2EAVN Astrometry toward the Extreme Outer Galaxy: Kinematic distance with the proper motion of G034.84−00.95Reviewed International coauthorship

Imai, Hiroshi; Ogawa, Hideo; Niinuma, Kotaro; Shimizu, Yusuke; Oyama, Tomoaki; Miyazawa, Chieko; Nishimura, Atsushi; Nosohara, Chiaki; Okada, Nozomi; Amada, Kei; Matsusaka, Ren; Nakashima, Keisuke; Shum, Ka-Yiu; Takahashi, Toshikazu; Tsutsumi, Toshihisa; Yoneyama, Sho; Sawada-Satoh, Satoko; Shinnaga, Hiroko; Yonekura, Yoshinori; Hirota, Tomoya; Kameno , Seiji .  Double-/triple-bands simultaneous observation system with perforated dichroic filter plates equipped for the Nobeyama 45 m radio telescope .  Proceedings of the 2022 Asian-Pacific Microwave Conference (APMC)   587 - 589   2023.1Double-/triple-bands simultaneous observation system with perforated dichroic filter plates equipped for the Nobeyama 45 m radio telescopeReviewed

Nakashima J., Fan H., Engels D., Zhang Y., Qiu J.J., Feng H.X., Xie J.Y., Imai H., Hsia C.H. .  A Profile-based Approach to Finding New Water Fountain Candidates using Databases of Circumstellar Maser Sources .  Proceedings of the International Astronomical Union18   377 - 379   2022.12

Imai H., Amada K., Gómez J.F., Uscanga L., Tafoya D., Nakashima K., Shum K.Y., Hamae Y., Burns R.A., Shibata Y., Kasai R., Takashima M., Orosz G. .  Water Fountain Sources Monitored in FLASHING .  Proceedings of the International Astronomical Union18   333 - 337   2022.12

Xu S., Imai H., Yun Y., Zhang B., Rioja M.J., Dodson R., Cho S.H., Kim J., Cui L., Sobolev A.M., Chibueze J.O., Kim D.J., Amada K., Nakashima J.I., Orosz G., Oyadomari M., Oh S., Yonekura Y., Sun Y., Mai X., Zhang J., Wen S., Jung T. .  The Astrometric Animation of Water Masers toward the Mira Variable BX Cam .  Proceedings of the International Astronomical Union18   328 - 332   2022.12

Yun Y., Cho S.H., Yoon D.H., Yang H., Dodson R., Rioja M.J., Imai H. .  Results of KVN Key Science Program for evolved stars .  Proceedings of the International Astronomical Union18   324 - 327   2022.12

Chacón P., Uscanga L., Imai H., Yung B.H.K., Gómez J.F., Rizzo J.R., Suárez O., Miranda L.F., Anglada G., Torrelles J.M. .  Interferometric Observations of the Water Fountain Candidates OH 16.3-3.0 and IRAS 19356+0754 .  Proceedings of the International Astronomical Union18   362 - 364   2022.12

Nakashima K., Shum K.Y., Imai H. .  HINOTORI and Maser Observations .  Proceedings of the International Astronomical Union18   380 - 382   2022.12

Honma M., Hirota T., Hachisuka K., Imai H., Kobayashi H., Jike T., Nakagawa A., Oyama T., Sunada K., Sakai D., Sakai N., Yamauchi A. .  Galactic maser astrometry with VERA .  Proceedings of the International Astronomical Union18   82 - 87   2022.12

Shakhvorostova N.N., Moran J.M., Alakoz A.V., Imai H., Gwinn C.R., Sobolev A.M. .  Fine structure and refractive scattering of the H<inf>2</inf>O maser in star-forming region W49N .  Proceedings of the International Astronomical Union18   238 - 239   2022.12

Uscanga L., Imai H., Gómez J.F., Tafoya D., Orosz G., McCarthy T.P., Hamae Y., Amada K. .  Evolution of the outflow traced by water masers in the evolved star IRAS 18043 - 2116 .  Proceedings of the International Astronomical Union18   338 - 342   2022.12

Amada K., Imai H., Hamae Y., Nakashima K., Shum K.Y., Tafoya D., Uscanga L., Gómez J.F., Orosz G., Burns R.A. .  Discovery of SiO masers in the Water Fountain source, IRAS 16552-3050 .  Proceedings of the International Astronomical Union18   359 - 361   2022.12

Gómez J.F., Cala R.A., Miranda L.F., Imai H., Osorio M., Anglada G. .  A sensitive search for SiO maser emission in planetary nebulae .  Proceedings of the International Astronomical Union18   374 - 376   2022.12

Akiyama, Kazunori; Algaba, Juan-Carlos; An, Tao; Asada, Keiichi; Asanok, Kitiyanee; Byun, Do-Young; Chanapote, Thanapol; Chen, Wen; Chen, Zhong; Cheng, Xiaopeng; Chibueze, James O.; Cho. Ilje; Cho, Se-Hyung; Chung, Hyun-Soo; Cui, Lang; Cui, Yuzhu; Doi, Akihiro; Dong, Jian; Fujisawa, Kenta; Gou, Wei; Guo, Wen; Hada, Kazuhiro; Hagiwara, Yoshiaki; Hirota, Tomoya; Hodgson, Jeffrey A.; Honma, Mareki; Imai, Hiroshi; Jaroenjittichai, Phrudth; Jiang, Wu; Jiang, Yongbin; Jiang, Yongchen; Jike, Takaaki; Jung, Dong-Kyu; Jung, Taehyun; Kawaguchi, Noriyuki; Kin, Dong-Jin; Kim, Hyo-Ryoung; Kim, Jaeheon; Kim, Jeong-Sook; Kim, Kee-Tae; Kim, Soon-Wook; Kino, Motoki; Kobayashi, Hideyuki; Koyama, Shoko; Kramer, Busaba H.; Lee, Jee-Won; Lee, Jeong Ae; Lee, Sang-Sung; Lee, Sang Won; Li, Bin; Li, Guanghui; Li, Xiaofei; Li, Zhixuan; Liu, Qinghui; Liu, Xiang; Lu, Ru-sen; Motogi, Kazuhito; Nakamura, Masanori; Niinuma, Kotaro; Oh, Chungsik; Oh, Hongjong; Oh, Junghwan; Oh, Se-Jin; Oyama, Tomoaki; Park, Jongho; Poshyachinda, Saran; Ro, Hyunwook; Roh, Duk-Hyoo; Rujopakarn, Wiphu; Sakai, Nobuyuki; Satoh-Sawada, Satoko; Shen, Zhi-Qiang; Shibata, Katsunori M.; Sohn, Bong Won; Soonthornthum, Boonrucksar; Sugiyama, Koichiro; Sun, Yunxia; Takamura, Mieko; Tanabe, Yoshihiro; Tazaki, Fumie; Trippe, Sascha; Wajima, Kiyoaki; Wang, Jinqing; Wang, Na; Wang, Shiqiang; Wang, Xuezheng; Xia, Bo; Xu, Shuangjing; Yan, Hao; Yang, Wenjun; Yeom, Jae-Hwan; Yi, Kunwoo; Yi, Sang-Oh; Yonekura, Yoshinori; Yoon, Hasu; Yu, Linfeng; Yuan, Jianping; Yun, Youngjoo; Zhang, Bo; Zhang, Hua; Zhang, Yingkang; Zhao, Guang-Yao; Zhao, Rongbing; Zhong, Weiye .  Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN) .  Galaxies10   113   2022.12Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN)Reviewed International coauthorship

Xu, Shuangjing; Imai, Hiroshi; Yun, Youngjoo; Zhang, Bo; Rioja, Maria J.; Dodson, Richard; Cho, Se-Hyung; Kim, Jaeheon; Cui, Lang; Sobolev, Andrey M.; Chibueze, James O.; Kim, Dong-Jin; Amada, Kei; Nakashima, Jun-ichi; Orosz, Gabor; Oyadomari, Miyako; Oh, Sejin; Yonekura, Yoshinori; Sun, Yan; Mai, Xiaofeng; Zhang, Jingdong; Wen, Shiming; Jung, Taehyun .  The Astrometric Animation of Water Masers towards the Mira Variable BX Cam .  The Astrophysical Journal941   105   2022.12The Astrometric Animation of Water Masers towards the Mira Variable BX CamReviewed International coauthorship

Cala, Roldán A.; Gómez, José F.; Miranda, Luis F.; Uscanga, Lucero; Breen, Shari L.; Dawson, Joanne R.; de Gregorio-Monsalvo, Itziar; Imai, Hiroshi; Qiao, Hai-Hua; Suárez, Olga .  Searching for nascent planetary nebulae: OHPNe candidates in the SPLASH survey .  Monthly Notices of the Royal Astronomical Society516   2235 - 2251   2022.10Searching for nascent planetary nebulae: OHPNe candidates in the SPLASH surveyReviewed International coauthorship

Dempsey, James; McClure-Griffiths, N. M.; Murray, Claire; Dickey, John M.; Pingel, Nickolas M.; Jameson, Katherine; Dénes, Helga; van Loon, Jacco Th.; Leahy, D.; Lee, Min-Young; Stanimirović, S.; Breen, Shari; Buckland-Willis, Frances; Gibson, Steven J.; Imai, Hiroshi; Lynn, Callum; Tremblay, C. D. .  GASKAP-HI Pilot Survey Science III: An unbiased view of cold gas in the Small Magellanic Cloud .  Publications of the Astronomical Society of Australia39   e34   2022.8GASKAP-HI Pilot Survey Science III: An unbiased view of cold gas in the Small Magellanic CloudReviewed International coauthorship

Dawson, J. R.; Jones, P. A.; Purcell, C.; Walsh, A. J.; Breen, S. L.; Brown, C.; Carretti, E.; Cunningham, M. R.; Dickey, J. M.; Ellingsen, S. P.; Gibson, S. J.; Gómez, J. F.; Green, J. A.; Imai, H.; Krishnan, V.; Lo, N.; Lowe, V.; Marquarding, M.; McClure-Griffiths, N. M. .  SPLASH: the Southern Parkes Large-Area Survey in Hydroxyl - data description and release .  Monthly Notices of the Royal Astronomical Society512   3345 - 3364   2022.5SPLASH: the Southern Parkes Large-Area Survey in Hydroxyl - data description and releaseReviewed International coauthorship

Yamamoto, Hiroaki ; Okamoto, Ryuji ; Murata, Yasuhiro ; Nakanishi, Hiroyuki ; Imai, Hiroshi ; Kurahara, Kohei .  Physical properties of the molecular cloud, N4, in SS 433: Evidence for an interaction of molecular cloud with the jet from SS 433 .  Publications of the Astronomical Society of Japan   2022.3Physical properties of the molecular cloud, N4, in SS 433: Evidence for an interaction of molecular cloud with the jet from SS 433Reviewed

Scicluna, P., Kemper, F., McDonald, I., Srinivasan, S., Trejo, A., Wallström, S. H. J., Wouterloot, J. G. A., Cami, B. J., Greaves, J., He, J. Hoai, D. T., Kim, H., Jones, O. C., Shinnaga, H., Clark, C. J. R., Dharmawardena, T., Holland, W., Imai, H., van Loon, J. Th., Menten, K. M., Wesson, R., Chawner, H., Feng, S., Goldman, S., Liu, F. C., MacIsaac, H., Tang, J., Zeegers, S., Amada, K., Antoniou, V., Bemis, A., Boyer, M. L., Chapman, S., Chen, X., Cho, S.-H., Cui, L., Dell’Agli, F., Friberg, P., Fukaya, S., Gomez, H., Gong,Y., Haswell, C., Hirano, N., Hony, S., Izumiura, H., Jeste, M., Jiang, X., Kaminski, T., Keaveney, N., Kim, J., Kraemer, K. E., Kuan, Y.-J., Lagadec, E., Lee, C. F., Li, D., Liu, S.-Y., Liu, T., de Looze, I., Lykou, F., Maraston, C., Marshall, J. P., Matsuura, M., Min, C., Otsuka, M., Oyadomari, M., Parsons, H., Patel, N. A., Peeters, E., Pham, T. A., Qiu, J., Randall, S., Rau, G., Redman, M. P., Richards, A. M. S., Serjeant, S., Shi, C., Sloan, G. C., Smith, M. W. L., J. A., Uttenthaler, S., Ventura, P., Wang, B., Yamamura, I., Yang, T., Yun, Y., Zhang, F., Zhang, Y., Zhao, G., Zhu, M., Zijlstra, A. A. .  The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope .  Monthly Notices of the Royal Astronomical Society512   1091 - 1110   2022.3The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell TelescopeReviewed International coauthorship

Pingel, N. M.; Dempsey, J.; McClure-Griffiths, N. M.; Dickey, J. M.; Jameson, K. E.; Arce, H.; Anglada, G.; Bland-Hawthorn, J.; Breen, S. L.; Buckland-Willis, F.; Clark, S. E.; Dawson, J. R.; Dénes, H.; Di Teodoro, E. M.; For, B. -Q.; Foster, Tyler J.; Gómez, J. F.; Imai, H.; Joncas, G.; Kim, C. -G.; Lee, M. -Y.; Lynn, C.; Leahy, D.; Ma, Y. K.; Marchal, A.; McConnell, D.; Miville-Deschènes, M. -A.; Moss, V. A.; Murray, C. E.; Nidever, D.; Peek, J.; Stanimirović, S.; Staveley-Smith, L.; Tepper-Garcia, T.; Tremblay, C. D.; Uscanga, L.; van Loon, J. Th.; Vázquez-Semadeni, E.; Allison, J. R.; Anderson, C. S.; Ball, Lewis; Bell, M.; Bock, D. C. -J.; Bunton, J.; Cooray, F. R. ; Cornwell, T.; Koribalski, B. S.; Gupta, N.; Hayman, D. B.; Harvey-Smith, L.; Lee-Waddell, K.; Ng, A. ; Phillips, C. J.; Voronkov, M.; Westmeier, T.; Whiting, M. T. .  GASKAP-HI pilot survey science I: ASKAP zoom observations of HI emission in the Small Magellanic Cloud .  Publications of the Astronomical Society of Australia39   e005   2022.2GASKAP-HI pilot survey science I: ASKAP zoom observations of HI emission in the Small Magellanic CloudReviewed International coauthorship

Amada, Kei; Imai, Hiroshi; Hamae, Yuki;Nakashima, Keisuke; Shun, Ka Yiu; Tafoya, Daniel; Uscanga, Lucero; Gomez, Jose-Francisco; Orosz, Gabor; Burns, Ross A .  Discovery of SiO masers in the ``water fountain" source IRAS 16552-3050 .  Astronomical Journal163   85   2022.2Discovery of SiO masers in the ``water fountain" source IRAS 16552-3050Reviewed International coauthorship

Baan, Willem A.; Imai, Hiroshi; Orosz, Gabor .  Fallback in bipolar Planetary Nebulae ? .  Research in Astronomy and Astrophysics21   275   2021.12Fallback in bipolar Planetary Nebulae ?Reviewed International coauthorship

Khouri, Theo ; Vlemmings, Wouter H. T. ; Tafoya, Daniel ; Pérez-Sánchez, Andrés F. ; Sánchez Contreras, Carmen ; Gómez, José F. ; Imai, Hiroshi ; Sahai, Raghvendra .  Observational identification of a sample of likely recent common-envelope events .  Nature Astronomy6   275 - 286   2021.12Observational identification of a sample of likely recent common-envelope eventsReviewed International coauthorship

Trinidad, Miguel A. ; Imai, Hiroshi ; de la Fuente, Eduardo ; Toledano-Juárez, Ivan ; Masqué, Joseph M. ; Rodríguez-Esnard, Tatianna .  Proper motions of water masers in the star-forming region IRAS 23139+5939 .  Publications of the Astronomical Society of Japan73   1669 - 1680   2021.12Proper motions of water masers in the star-forming region IRAS 23139+5939Reviewed International coauthorship

Amada K., Fukaya S., Imai H., Scicluna P., Hirano N., Trejo-Cruz A., Zeegers S., Kemper F., Srinivasan S., Wallström S., Dharmawardena T., Shinnaga H. .  Statistical properties of cold circumstellar envelops observed in NESS-NRO .  Proceedings of the International Astronomical Union17   97 - 99   2021.8

Imai H., Amada K., Gómez J.F., Uscanga L., Tafoya D., Nakashima K., Shum K.Y., Hamae Y., Burns R., Orosz G. .  Water and silicon-monoxide masers monitored towards the water fountain sources .  Proceedings of the International Astronomical Union17   91 - 93   2021.8

Y. Uno, H. Imai, K. Shinano, H-H Qiao, J. R. Dawson, S. L. Breen, J.-F. Gómez .  Modelled 3D distribution of OH/IR stars in the Galactic disc .  Monthly Notices of the Royal Astronomical Society502   3012 - 3020   2021.1Modelled 3D distribution of OH/IR stars in the Galactic discReviewed

Okada Nozomi, Matsumoto Takeru, Kondo Hiroshi, Takashima Tatsuyuki, Masui Sho, Ueda Shota, Nishimura Atsushi, Takeshi Manabe, Onishi Toshikazu, Ogawa Hideo, Amari Ryoko, Tsutsumi Toshihisa, Aoki Takahiro, Sawada-Satoh Satoko, Niinuma Kotaro, Fujisawa Kenta, Kimura Kimihiro, Minamidani Tetsuhiro, Miyazawa Chieko, Kaneko Hiroyuki, Torii Kazufumi, Takahashi Shigeru, Miyamoto Yusuke, Kazuhiko Miyazawa, Oyama Tomoaki, Kameno Seiji, Imai Hiroshi .  Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented) .  PROCEEDINGS OF SPIE11453   1145349-1 - 1145349-11   2021.1Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented)

Nozomi Okada, Takeru Matsumoto, Hiroshi Kondo, Tatsuyuki Takashima, Sho Masui, Shota Ueda, Atsushi Nishimura, Takeshi Manabe, Toshikazu Onishi, Hideo Ogawa, Ryoko Amari, Toshihisa Tsutsumi, Takahiro Aoki, Satoko Sawada-Satoh, Kotaro Niinuma, Kenta Fujisawa, Kimihiro Kimura, Tetsuhiro Minamidani, Chieko Miyazawa, Hiroyuki Kaneko, Kazufumi Torii, Shigeru Takahashi, Yusuke Miyamoto, Kazuhiko Miyazawa, Tomoaki Oyama, Seiji Kameno, Hiroshi Imai .  Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented) .  Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X   1145349   2020.12Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented)

The First VERA Astrometry Catalog .  Publications of the Astronomical Society of Japan72   50   2020.8The First VERA Astrometry CatalogReviewed

FLASHING: New high-velocity H2O masers in IRAS 18286-0959 .  Publications of the Astronomical Society of Japan72   58   2020.8FLASHING: New high-velocity H2O masers in IRAS 18286-0959Reviewed

Qiao, Hai-Hua, Breen, Shari L.. Gómez, José F., Dawson, J. R., Walsh, Andrew J., Green, James A., Ellingsen, Simon P., Imai, Hiroshi, Shen, Zhi-Qiang .  Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg^2 .  The Astrophysical Journal Supplement Series247 ( 1 ) 5   2020.3Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg^2Reviewed

Tafoya, Daniel, Imai, Hiroshi, Gómez, José F., Nakashima, Jun-ichi, Orosz, Gabor, Yung, Bosco H. K. .  Shaping the Envelope of the Asymptotic Giant Branch Star W43A with a Collimated Fast Jet .  The Astrophysical Journal Letters890 ( 1 ) L14   2020.2Shaping the Envelope of the Asymptotic Giant Branch Star W43A with a Collimated Fast JetReviewed

Okada, Nozomi, Hashimoto, Ikumi, Kimura, Kimihiro, Manabe, Takeshi, Tokuda, Kazuki, Onishi, Toshikazu, Ogawa, Hideo, Imai, Hiroshi, Minamidani, Tetsuhiro .  Development of a 22/43 GHz-band quasi-optical perforated plate and dual-band observation system of the Nobeyama 45 m telescope .  Publications of the Astronomical Society of Japan72 ( 1 ) 7   2020.2Development of a 22/43 GHz-band quasi-optical perforated plate and dual-band observation system of the Nobeyama 45 m telescopeReviewed

Shakhvorostova, N. N., Sobolev, A. M., Moran, J. M., Alakoz, A. V., Imai, H., Avdeev, V. Y. .  RadioAstron probes the ultra-fine spatial structure in the H2O maser emission in the star forming region W49N .  Advances in Space Research65 ( 2 ) 772 - 779   2020.1RadioAstron probes the ultra-fine spatial structure in the H2O maser emission in the star forming region W49NReviewed

Asymmetric distributions of H2O and SiO masers towards V627 Cas .  Monthly Notices of the Royal Astronomical Society495   1284 - 1290   2020Asymmetric distributions of H2O and SiO masers towards V627 CasReviewed

Uscanga, L., Gómez, J. F., Yung, B. H. K., Imai, H., Rizzo, J. R., Suárez, O., Miranda, L. F., Trinidad, M. A., Anglada, G., Torrelles, J. M. .  Looking for new water-fountain stars .  Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time. Proceedings of the International Astronomical Union343   527 - 528   2019.12Looking for new water-fountain stars

Imai, Hiroshi, Nakagawa, Akiharu, Takaba, Hiroshi .  Overall variation of the H2O masers around W Hydrae in 28 years .  Publications of the Astronomical Society of Japan71 ( 6 ) 126   2019.12Overall variation of the H2O masers around W Hydrae in 28 yearsReviewed

Kim, Jaeheon, Cho, S. -H., Bujarrabal, V., Imai, H., Dodson, R., Yoon, D. -H., Zhang, B. .  Time variations of H2O and SiO masers in the proto-Planetary Nebula OH 231.8+4.2 .  Monthly Notices of the Royal Astronomical Society488 ( 1 ) 1427 - 1445   2019.9Time variations of H2O and SiO masers in the proto-Planetary Nebula OH 231.8+4.2Reviewed

Hai-Hua Qiao, Andrew J. Walsh, Shari L. Breen, José F. Gómez, Joann R. Dawson, Hiroshi Imai, Simon P. Ellingsen, James A. Green, Zhi-Qiang Shen .  Accurate OH Maser Positions. II. The Galactic Center Region .  The Astrophysical Journal Supplement Series239   15   2018.11Accurate OH Maser Positions. II. The Galactic Center RegionReviewed

Orosz, G., Gómez, J.F., Imai, H., Tafoya, D., Torrelles, J.M., Burns, R.A., Frau, P., Guerrero, M.A, Miranda, L.F., Perez-Torres, M.A., Ramos-Larios, G., Rizzo, J.R., Suárez, O., Uscanga, L. .  Rapidly evolving episodic outflow in IRAS 18113−2503: clues to the ejection mechanism of the fastest water fountain .  Monthly Notices of the Royal Astronomical Society482   L40 - L45   2018.10Rapidly evolving episodic outflow in IRAS 18113−2503: clues to the ejection mechanism of the fastest water fountainReviewed

Cho, S.-H., Yoon, D.-H., Yun, Y.-J., Choi, Y.-K., Dodson, R., Rioja, M., Kim, J.-H., Imai, H., Kim, D.-J., Yang H., Byun D.-Y. .  Astrometrically registered maps of H2O and SiO masers toward VX Sagittarii .  Nature Communications8   2534   2018.8Astrometrically registered maps of H2O and SiO masers toward VX SagittariiReviewed

M. Rioja, R. Dodson, G. Orosz, G. H. Imai .  MultiView High Precision VLBI Astrometry at Low Frequencies .  IAU Symposium 336336   439 - 442   2018.8MultiView High Precision VLBI Astrometry at Low FrequenciesReviewed

Willem Baan, Alexey Alakoz, Tao An, Simon Ellingsen, Christian Henkel, Hiroshi Imai, Vladimir Kostenko, , Ivan Litovchenko, James Moran, Andrej Sobolev, Alexander Tolmachev, .  H2O MegaMasers: RadioAstron success story .  IAU Symposium 336336   422 - 425   2018.8H2O MegaMasers: RadioAstron success storyReviewed

Nakashima, J., Engels, D., Hsia, C.-H., Imai, H., Ladeyschikov, D.A., Sobolev, A.M., Yung, B.H. .  The Extensive Database of Astrophysical Maser Sources (eDAMS): the First Release on Circumstellar Maser Sources .  IAU Symposium 336336   395 - 396   2018.8The Extensive Database of Astrophysical Maser Sources (eDAMS): the First Release on Circumstellar Maser SourcesReviewed

Se-Hyung Cho, Hiroshi Imai 他 .  A study on evolved stars by simultaneous observations of H2O and SiO masers using KVN .  IAU Symposium 336336   359 - 364   2018.8A study on evolved stars by simultaneous observations of H2O and SiO masers using KVNInvited Reviewed

Gabor Orosz, José F. Gómez, Daniel Tafoya, Hiroshi Imai, José M. Torrelles, .  Bow shocks in water fountain jets .  IAU Symposium 33614   351   2018.8Bow shocks in water fountain jetsReviewed

Hiroshi Imai .  Towards continuous viewing of circumstellar maser sources over decades .  IAU Symposium 336336   341 - 346   2018.8Towards continuous viewing of circumstellar maser sources over decadesInvited Reviewed

Mareki Honma, Hiroshi Imai 他 .  Maser Astrometry and Galactic Structure Study with VLBI .  IAU Symposium 336336   162 - 167   2018.8Maser Astrometry and Galactic Structure Study with VLBIInvited Reviewed

Sobolev, A.M., Moran, J.M., Grey, M.D., Alakoz, A., Imai, H., Baan, W.A., Tolmachev, A.M., Samodurov, V.A., Ladeyschchikov, D.A. .  Sun-sized Water Vapor Masers in Cepheus A .  Astrophysical Journal856   60   2018.5Sun-sized Water Vapor Masers in Cepheus AReviewed

Oyadomari, M., Imai, H., Nagayama, T., Oyama, T., Matsumoto, N., Nakashima, J., Cho, S.-H. .  Correlation between SiO v = 3 J = 1 → 0 maser excitation and the light curve of a long-period variable star .  Publications of the Astronomical Society of Japan70   33   2018.5Correlation between SiO v = 3 J = 1 → 0 maser excitation and the light curve of a long-period variable starReviewed

An, T., Sohn, B.-W., Imai, H. .  Capabilities and prospectives of the East Asia Very Long Baseline Interferometry Network .  Nature Astronomy2   118 - 125   2018.1Capabilities and prospectives of the East Asia Very Long Baseline Interferometry NetworkInvited Reviewed

Goldman, S.R., van Loon, J. Th., Gómez, J. F., Green, J.A., Zijlstra, A.A., Nanni, A., Imai, H., Whitelock, P.A., Groenewegen, M.A.T., Oliveira, J.M., .  A death of OH/IR stars in the Small Magellanic Cloud .  Monthly Notices of the Royal Astronomical Society473   3835 - 3853   2017.4A death of OH/IR stars in the Small Magellanic CloudReviewed

Orosz, G., Imai, H., Dodson, R., Rioja, M. J., Frey, S., Burns, R. A., Etoka, S., Nakagawa, A., Nakanishi, H., Asaki, Y., Goldman, S. R., and Tafoya, D. .  Astrometry of OH/IR stars using 1612 MHz hydroxyl masers. I. Annual parallaxes of WX Psc and OH138.0+7.2 .  AJ153 ( 119 )   2017.3Astrometry of OH/IR stars using 1612 MHz hydroxyl masers. I. Annual parallaxes of WX Psc and OH138.0+7.2Reviewed

Goddi, C., Surcis, G., Moscadelli, L., Imai, H. 他 .  Measuring Magnetic Fields from Water Masers Associated with the Synchrotron Protostellar Jet in W3(H2O) .  Astron. Astrophys.597 ( A43 )   2017.1Measuring Magnetic Fields from Water Masers Associated with the Synchrotron Protostellar Jet in W3(H2O)Reviewed

Burns, R. A., Handa, T., Imai, H., Nagayama, T., Omodaka, T., Hirota, T., Motogi, K., van Langevelde, H. J., Baan, W. A. .  Trigonometric distance and proper motions of H2O maser bowshocks in AFGL 5142 .  MNRAS467 ( 2367 )   2017.1Trigonometric distance and proper motions of H2O maser bowshocks in AFGL 5142Reviewed

Rioja, M. J., Dodson, R., Orosz, G., Imai, H., Frey, S. .  MultiView High Precision VLBI Astrometry at Low Frequencies .  AJ153 ( 105 )   2017.1MultiView High Precision VLBI Astrometry at Low FrequenciesReviewed

Goldman, S. R., van Loon, J. Th., Zijlstra, A. A., Green, J. A., Wood, P. R., Ambra, N., Imai, H., Whitelock, P. A., Matsuura, M., Groenewege, M. A., Gómez, J. F. .  The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicity .  Monthly Notices of the Royal Astronomical Society465 ( 403 )   2016.12The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicityReviewed

Takefuji, K., Imai, H., Sekido, M. .  Development of cross-correlation spectromery and the coherent structures of maser sources .  PASJ68   86   2016.10Development of cross-correlation spectromery and the coherent structures of maser sourcesReviewed

Youngjoo Yun, Se-Hyung Cho, Hiroshi Imai, et al. .  SiO Masers around WX Psc Mapped with the KVN and VERA Array (KaVA) .  The Astrophysical Journal822   3   2016.4SiO Masers around WX Psc Mapped with the KVN and VERA Array (KaVA)Reviewed

Yung, B.H.K., Nakashima, J.-I., Hsia, C.-H., Imai, H. .  Do water fountains jets really indicate the onset of the morphological metamorphosis of circumstellar envelopes? .  MNRAS465 ( 4482 )   2016.3Do water fountains jets really indicate the onset of the morphological metamorphosis of circumstellar envelopes?Reviewed

Burns, R.A., Imai H. 他 .  Molecula jet emission and spectroscopic survey of S235AB .  Astronomy and Astrophisics586   34   2016Molecula jet emission and spectroscopic survey of S235ABReviewed

Qiao, H.-H, Imai, H. 他 .  Unusual Shock-excited OH maser emission in a Young Planetary Nebula .  The Astrophysical Journal817   37   2016Unusual Shock-excited OH maser emission in a Young Planetary NebulaReviewed

Oyama, T., Kono, Y.,Imai, H.　他 .  First Simultaneous mapping of four 7 mm SiO maser lines using the OCTAVE System .  Publ. Astron. Soc. Japan68   105   2016First Simultaneous mapping of four 7 mm SiO maser lines using the OCTAVE SystemReviewed

Yoshiura, S., Imai, H.　他 .  Sensitivity for 21cm Bispectrum from Epoch of Reionization .  Monthly Notice of the Royal AstronomicalSociety451   266 - 274   2015Sensitivity for 21cm Bispectrum from Epoch of ReionizationReviewed

Burns, R.A., Imai H. 他 .  A Water Spout’ Maser Jet in the S235AB-MIR Massive Young Stellar Object .  Monthly Notice of the Royal Astronomical Society453   3163 - 3173   2015A Water Spout’ Maser Jet in the S235AB-MIR Massive Young Stellar ObjectReviewed

Naskanishi, H., Imai, H.　他 .  Outer rotation curve of the Galaxy with VERA. Ⅱ. Annual parallax and proper motion of the star-forming region IRAS21379+5106 .  Publications of the Astronomical Society of Japan67   68 - 13pages   2015Outer rotation curve of the Galaxy with VERA. Ⅱ. Annual parallax and proper motion of the star-forming region IRAS21379+5106Reviewed

Chong, S.-N., Imai, H. 他 .  Water Masers in W43A: Early Morphological Changes of a Future Planetary Nebula .  The Astrophysical Journal67   53 - 9pages   2015Water Masers in W43A: Early Morphological Changes of a Future Planetary NebulaReviewed

Y. Asaki, H. Imai, A. M. Sobolev, S. Yu. Parfenov .  DISTANCE AND PROPER MOTION MEASUREMENT OF WATER MASERS IN SHARPLESS 269 IRS 2w .  The Astrophysical Journal787   54 - 9 pages   2014.5DISTANCE AND PROPER MOTION MEASUREMENT OF WATER MASERS IN SHARPLESS 269 IRS 2wReviewed

J. R. Dawson, A. J. Walsh, P. A. Jones, S. L. Breen, M. R. Cunningham,V. Lowe, C. Jones, C. Purcell, J. L. Caswell, E. Carretti,N. M. McClure-Griths, S. P. Ellingsen, J. A. Green, J. F. Gomez,V. Krishnan, J. M. Dickey, H. Imai, S. J. Gibson, P. Hennebelle,N. Lo, T. Hayakawa, Y. Fukui, and A. Mizuno .  SPLASH: the Southern Parkes Large-Area Survey in Hydroxyl - first science from the pilot region .  Monthly Notices of the Royal Astronomical Society439   1596 - 1614   2014.4SPLASH: the Southern Parkes Large-Area Survey in Hydroxyl - first science from the pilot regionReviewed

Asaki, Y., Imai, H. 他 .  Distance and Proper Motion Measurement of Water Masers in Sharpless 269 IRS 2w .  The Astrophysical Journal787   54 - 9pages   2014Distance and Proper Motion Measurement of Water Masers in Sharpless 269 IRS 2wReviewed

Chibueze, J.O., Imai, H. 他 .  Astrometry and Spatio-kinematics of H2O Masers in the Massive Star-forming Region NGC 6334I(North) with VERA .  The Astrophysical Journal784   114 - 8pages   2014Astrometry and Spatio-kinematics of H2O Masers in the Massive Star-forming Region NGC 6334I(North) with VERAReviewed

Hirota,T., Imai,H. 他 .  VERA and ALMA Observations of the H2O supermaser burst in Orion KL .  Publications of the Astronomical Society of Japan66   106   2014VERA and ALMA Observations of the H2O supermaser burst in Orion KLReviewed

Hiroshi Imai, Jun-ichi Nakashima,Shuji Deguchi, Sun Kwok, Philip J. Diamond .  The Spatio-kinematical Structure of H2O and OH Masers in the"Water Fountain" Source IRAS 18460-0151 .  Astrophysical Journal773   182 - 12pages   2013.8The Spatio-kinematical Structure of H2O and OH Masers in the"Water Fountain" Source IRAS 18460-0151Reviewed

Hiroshi Imai, Jun-ichi Nakashima, Bosco Yung H.K., Shuji Deguchi, Sun Kwok, Philip J. Diamond .  Relic Circumstellar Envelope in the ``Water Fountain" Source IRAS18286-0959 .  Astrophysical Journal771   47 - 11pages   2013.7Relic Circumstellar Envelope in the ``Water Fountain" Source IRAS18286-0959Reviewed

Richard Dodson, Maria Rioja, Yoshiharu Asaki, Hiroshi Imai, X.-H. Hong, Zhi-Qing. Shen .  THE APPLICATION OF MULTIVIEW METHODS FOR HIGH-PRECISION ASTROMETRIC SPACE VLBI AT LOW FREQUENCIES .  The Astronomical Journal145   147 - 11pages   2013.5THE APPLICATION OF MULTIVIEW METHODS FOR HIGH-PRECISION ASTROMETRIC SPACE VLBI AT LOW FREQUENCIESReviewed

Bosco Yung H.K., Jun-ichi Nakashima,Hiroshi Imai, Shuji Deguchi, Sun Kwok .  Water Maser Survey on AKARI and IRAS Sources: A Search for “Low-velocity” Water Fountains .  Astrophysical Journal769   20 - 18pages   2013.5Water Maser Survey on AKARI and IRAS Sources: A Search for “Low-velocity” Water FountainsReviewed

H. Imai, T. Kurayama, M. Honma, and T. Miyaji .  Annual Parallax Distance and Secular Motion of the Water Fountain Source IRAS 18286-0959 .  Publications of the Astronomical Society of Japan65 ( 2 ) 28 - 9pages   2013.4Annual Parallax Distance and Secular Motion of the Water Fountain Source IRAS 18286-0959Reviewed

H. Imai, Y. Katayama, S. P. Ellingsen, Y. Hagiwara .  ATCA survey of H2O masers in the Large Magellanic Cloud .  Monthly Notices of the Royal Astronomical Society Letters432   16 - 20   2013.3ATCA survey of H2O masers in the Large Magellanic CloudReviewed

John M. Dickey, Naomi McClure-Griffiths, John S. Gibson, Jose F. Gomez. J., Hiroshi Imai, et al. (56 authors) .  GASKAP - The Galactic ASKAP Survey .  Publications of the Astronomical Society of Australia30   e003   2013.2GASKAP - The Galactic ASKAP SurveyReviewed

Hiroshi Imai .  Water fountains: bipolar fast stellar jets traced by water vapor maser emission .  Feeding Compact Objects: Accretion on All Scales, Proceedings of the International Astronomical Union Symposium 290   227 - 228   2013.2Water fountains: bipolar fast stellar jets traced by water vapor maser emission

Imai, H., Nakashima, J. 他 .  EXPLORATION OF A RELIC CIRCUMSTELLAR ENVELOPE IN THE "WATER FOUNTAIN”, SOURCE IRAS 18286–0959 .  The Astrophysical Journal771   47 - 11pages   2013EXPLORATION OF A RELIC CIRCUMSTELLAR ENVELOPE IN THE "WATER FOUNTAIN”, SOURCE IRAS 18286–0959Reviewed

Dodson, R., Rioja, M.J., Asaki, Y., Imai, H., Hong, X.-Y, Shen, Z. .  Application of MultiView Methods for High Precision Astrometric Space VLBI at Low Frequencies .  The Astronomucal Journal145   147 - 11pages   2013Application of MultiView Methods for High Precision Astrometric Space VLBI at Low FrequenciesReviewed

Imai, H., Nakashima, J. 他 .  The Spatio-Kinematical Structure of H2O and OH Masers in the ‘Water Fountain’ Source IRAS 18460-0151 .  The Astrophysical Journal773   182 - 12pages   2013The Spatio-Kinematical Structure of H2O and OH Masers in the ‘Water Fountain’ Source IRAS 18460-0151Reviewed

Hiroshi Imai, Miyako Oyadomari, Sze Ning Chong, Akiharu Nakagawa, Tomoharu Kurayama, Jun-ichi Nakashima, Naoko Matsumoto, Takumi Nagayama, Tomoaki Oyama, Shota Mizuno, Shuji Deguchi, Se-Hyung Cho .  Pilot VLBI Survey of SiO v=3 J=1-0 Maser Emission around Evolved Stars .  Publications of the Astronomical Society of Japan64 ( 6 ) L6   2012.12Pilot VLBI Survey of SiO v=3 J=1-0 Maser Emission around Evolved StarsReviewed

Sze Ning Chong, Sun Kwok, Hiroshi Imai, Daniel Tafoya, James Chibueze O. .  Multipolar Planetary Nebulae: Not as Geometrically Diversified as Thought .  Astrophysical Journal760   115   2012.12Multipolar Planetary Nebulae: Not as Geometrically Diversified as ThoughtReviewed

Hiroshi Imai, Nobuyuki Sakai, Hiroyuki Nakanishi, Hirofumi Sakanoue, Mareki Honma, Takeshi Miyaji .  Annual Parallax of the K-Type Star System IRAS 22480+6002 Measured with VERA .  Publications of the Astronomical Society of Japan64   142 - 11pages   2012.12Annual Parallax of the K-Type Star System IRAS 22480+6002 Measured with VERAReviewed

Hiroshi Imai, Sze-Ning Chong, Jin-Hua He, Jun-ichi Nakashima, Chih-Hao Hsia, Takeshi Sakai, Shuji Deguchi, Nico Koning .  Extremely Strong 13CO J = 3--2 Line in the ``Water Fountain'' IRAS 16342-3814: Evidence for the Hot-Bottom Burning .  Publications of the Astronomical Society of Japan64 ( 5 ) 87 - 8pages   2012.10Extremely Strong 13CO J = 3--2 Line in the ``Water Fountain'' IRAS 16342-3814: Evidence for the Hot-Bottom BurningReviewed

Haruka Yamaki, Seiji Kameno, Hisayuki Beppu, Izumi Mizuno, Hiroshi Imai .  Optimization by Smoothed Bandpass Calibration in Radio Spectroscopy .  Publications of the Astronomical Society of Japan64 ( 5 ) 117 - 9pages   2012.10Optimization by Smoothed Bandpass Calibration in Radio SpectroscopyReviewed

Hiroshi Imai, Daniel Tafoya, VERA collaboration .  Trigonometric parallax measurements of post-AGB stars with VERA .  Planetary Nebulae: An Eye to the Future, Proceedings of the International Astronomical Union Symposium283   394 - 395   2012.8Trigonometric parallax measurements of post-AGB stars with VERAReviewed

Makoto Miyoshi, Yoshiharu Asaki, Kei-ichi Wada, Hiroshi Imai .  Analysis of H_2O masers in Sharpless 269 using VERA archival data-Effect of maser structures on astrometric accuracy .  New Astronomy17   553 - 564   2012.8Analysis of H_2O masers in Sharpless 269 using VERA archival data-Effect of maser structures on astrometric accuracyReviewed

Hiroshi Imai, VERA collaboration .  Astrometry of H_2O masers in post-AGB stars .  From OH to H_0, Proceedings of the International Astronomical Union Symposium287   411 - 412   2012.7Astrometry of H_2O masers in post-AGB starsReviewed

James Chibueze Okwe, Hiroshi Imai, Daniel Tafoya, Toshihiro Omodaka, Osamu Kameya, Tomoya Hirota, Sze-Ning Chong, Jose Maria Torrelles .  A HIGHLY COLLIMATED WATER MASER BIPOLAR OUTFLOW IN THE CEPHEUS A HW3d MASSIVE YOUNG STELLAR OBJECT .  Astrophysical Journal748   146 - 157   2012.4A HIGHLY COLLIMATED WATER MASER BIPOLAR OUTFLOW IN THE CEPHEUS A HW3d MASSIVE YOUNG STELLAR OBJECTReviewed

Tatsuya Kamezaki, Akiharu Nakagawa, Toshihiro Omotaka, Tomoharu Kurayama, Hiroshi Imai, Daniel Tafoya, Makoto Matsui, Yoshiro Nishida, Takumi Nagayama, Mareki Honma, Hideyuki Kobayashi, Mine Takeuchi .  VLBI Astrometry of the Semiregular Variable RX Bootis .  Publications of the Astronomical Society of Japan64 ( 1 ) 7 - 8pages   2012.2VLBI Astrometry of the Semiregular Variable RX BootisReviewed

Honma, M., Imai, H., 他 .  Fundamental Parameters of the Milky Way Galaxy Based on VLBI Astrometry .  Publications of the Astronomical Society of Japan64   136 - 13pages   2012Fundamental Parameters of the Milky Way Galaxy Based on VLBI AstrometryReviewed

Hiroshi Imai, Rui Omi, Tomoharu Kurayama, Takumi Nagayama, Tomoya Hirota, Takeshi Miyaji, Toshihiro Omodaka .  Multiple Outflows Traced by H2O Masers around the Ultra-Compact HII Region G 34.26+0.15 .  Publications of the Astronomical Society of Japan63 ( 6 ) 1293 - 1311   2011.12Multiple Outflows Traced by H2O Masers around the Ultra-Compact HII Region G 34.26+0.15 Reviewed

Satoshi Shiozaki, Hiroshi Imai, Daniel Tafoya, Toshihiro Omodaka, Tomoya Hirota, Mareki Honma, Makoto Matsui, Yuji Ueno .  H_2O maser motions and the distance of the star forming reiong G192.16-3.84 .  Publications of the Astronomical Society of Japan63 ( 6 ) 1219 - 1228   2011.12H_2O maser motions and the distance of the star forming reiong G192.16-3.84Reviewed

Tomoya Hirota, Makoto Tsuboi, Kenta Fujisawa, Mareki Honma, Noriyuki Kawaguchi, Mi Kyoung Kim, Hideyuki Kobayashi, Hiroshi Imai, Toshihiro Omodaka, katsunori Shibata M., Tomomi Shimoikura, Yoshinori Yonekura .  IDENTIFICATION OF BURSTING WATER MASER FEATURES IN ORION KL .  Astrophysical Journal739   L59 - L62   2011.8IDENTIFICATION OF BURSTING WATER MASER FEATURES IN ORION KLReviewed

Tomoharu Kurayama, Akiharu Nakagawa, Satoko Sawada-Satoh, Katsuhisa Sato, Mareki Honma, Kazuyoshi Sunada, Tomoya Hirota, Hiroshi Imai .  Annual Parallax Measurements of an Infrared Dark Cloud MSXDC G034.43+00.24 with VERA .  Publications of the Astronomical Society of Japan63 ( 3 ) 513 - 525   2011.6Annual Parallax Measurements of an Infrared Dark Cloud MSXDC G034.43+00.24 with VERAReviewed

Bosco Yung H.K., Jun-ichi Nakashima, Hiroshi Imai, Shuji Deguchi, Philip J. Diamond, Sun Kwok .  HIGH VELOCITY PRECESSING JETS FROM THE WATER FOUNTAIN IRAS 18286-0959 REVEALED BY VERY LONG BASELINE ARRAY OBSERVATIONS .  Astrophysical Journal741   94 - 107   2011.3HIGH VELOCITY PRECESSING JETS FROM THE WATER FOUNTAIN IRAS 18286-0959 REVEALED BY VERY LONG BASELINE ARRAY OBSERVATIONSReviewed

Daisuke Nyu, Akiharu Nakagawa, Makoto Matsui, Hiroshi Imai, Yoshiaki Sofue, Toshihiro Omodaka, Tomoharu Kurayama, Ryuichi Kamohara, Tomoya Hirota, Mareki Honma, Katsunori Shibata M., Hideyuki Kobayashi, Kenzaburo Iwadate, Takeshi Miyaji .  Astrometry of AGB Variables with VERA --- Annual Parallax and the orbit of SY~Sculptoris in the Galaxy --- .  Publications of the Astronomical Society of Japan63 ( 1 ) 63 - 70   2011.2Astrometry of AGB Variables with VERA --- Annual Parallax and the orbit of SY~Sculptoris in the Galaxy ---Reviewed

Kazuma Ando, Takumi Nagayama, Toshihiro Omodaka, Toshihiro Handa, Hiroshi Imai, Akiharu Nakagawa, Hiroyuki Nakanishi, Mareki Honma, Hideyuki Kobayashi, Takeshi Miyaji .  Astrometry of Galactic Star-Forming Region ON 2N with VERA: Estimation of the Galactic Constants .  Publications of the Astronomical Society of Japan63 ( 1 ) 45 - 51   2011.2Astrometry of Galactic Star-Forming Region ON 2N with VERA: Estimation of the Galactic ConstantsReviewed

Tomoya Hirota, Mareki Honma, Hiroshi Imai, Kazuyoshi Sunada, Yuji Ueno, Hideyuki Kobayashi, Noriyuki Kawaguchi .  Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA --- IV. L1448C .  Publications of the Astronomical Society of Japan63 ( 1 ) 1 - 8   2011.2Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA --- IV. L1448C Reviewed

Daniel Tafoya, Hiroshi Imai, Yolanda Gomez, Jose Maria Torrelles, Nimesh Patel A., Guilem Anglada, Luis Miranda F., Mareki Honma, Tomoya Hirota, Takeshi Miyaji .  Measurement of the Distance and Proper Motions of the H2O Masers in the Young Planetary Nebula K 3-35 .  Publications of the Astronomical Society of Japan63 ( 1 ) 71 - 80   2011.2Measurement of the Distance and Proper Motions of the H2O Masers in the Young Planetary Nebula K 3-35Reviewed

Hiroshi Imai, Daniel Tafoya, Tomoya Hirota, Mareki Honma, Takeshi Miyaji .  Annual Parallax Distance and Kinematical Property of H2O Masers in IRAS 19312+1950 .  Publications of the Astronomical Society of Japan63 ( 1 ) 81 - 87   2011.2Annual Parallax Distance and Kinematical Property of H2O Masers in IRAS 19312+1950Reviewed

Jun-ichi Nakashima, Shuji Deguchi, Hiroshi Imai, Athol Kemball, Murrey Lewis B. .  Maser Properties of the Enigmatic IRAS Source 19312+1950 .  Astrophysical Journal728   266 - 277   2011.1Maser Properties of the Enigmatic IRAS Source 19312+1950Reviewed

Yoshiharu Asaki, Shuji Deguchi, Hiroshi Imai, Kazuya Hachisuka, Makoto Miyoshi, Mareki Honma .  DISTANCE AND PROPER MOTION MEASUREMENT OF THE RED SUPERGIANT, S PERSEI, WITH VLBI H2O MASER ASTROMETRY .  Astrophysical Journal721   266 - 277   2010.10DISTANCE AND PROPER MOTION MEASUREMENT OF THE RED SUPERGIANT, S PERSEI, WITH VLBI H2O MASER ASTROMETRYReviewed

Hiroshi Imai, Jun-ichi Nakashima, Shuji Deguchi, Aya Yamauchi, Akiharu Nakagawa, Takumi, Nagayama .  Japanese VLBI Network Mapping of SiO v = 3 J = 1--0 Maser Emission in W Hydrae .  Publications of the Astronomical Society of Japan62 ( 2 ) 431 - 439   2010.4Japanese VLBI Network Mapping of SiO v = 3 J = 1--0 Maser Emission in W HydraeReviewed

Ryuichi, Kamohara, Valentin Bujarrabal, Mareki Honma, Akiharu Nakagawa, Naoko Matsumoto, Tomoaki Oyama, Hiroshi Imai, Katsunori M. Shibata, Hideyki Kobayashi, Katsuhisa Sato, Yuji Ueno .  VERA observations of SiO maser emission from R Aquarii .  Astronomy and Astrophysics510   69 - 83   2010.3VERA observations of SiO maser emission from R AquariiReviewed

Hiroshi Imai, Jin-Hua He, Jun-ichi Nakashima, Nobuharu Ukita, Shuji Deguchi, Nico Koning .  CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959 .  Publications of the Astronomical Society of Japan61 ( 6 ) 1365 - 1372   2009.12CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959Reviewed

Hiroshi Imai .  Review: Cosmic Water Fountains in Radio Emission .  AGB Stars and Related Phenomena, A Conference in Honor of Yoshikazu Nakada   62 - 65   2009.1Review: Cosmic Water Fountains in Radio Emission

Mareki HONMA,Masachika KIJIMA, Hiroshi SUDA, Noriyuki KAWAGUCHI, Hideyuki KOBAYASHI, Takes hi BUSHIMATA, Rie SHIMIZU, Akane YOSHIMURA, Tetsuo SASAO,Tomoya HIROTA, Hiroshi IMAI, Kenzaburo IWADATE, Takaaki JIKE, Osamu KAMEYA, Ryuichi KAMOHARA, Seisuke KUJI, Tomoharu KURAYAMA, Seiji MANABE, Takes hi MIYAJI, Akiharu NAKAGAWA, Toshihiro OMODAKA, Tomoaki OYAMA, Satoshi SAKAI, Katsuhisa SATO, Katsunori M. SHIBATA, Yoshiaki TAMURA .  Dual-Beam Delay Calibration for VERA .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 935 - 950   2008.10Dual-Beam Delay Calibration for VERA Reviewed

Motonobu SHINTANI, Hiroshi IMAI, Kazuma ANDO, Kouichiro NAKASHIMA, Tomoya HIROTA, Noritomo INOMATA, Takayuki KAI, Seiji KAMENO, Masachika KIJIMA, Hideyuki KOBAYASHI, Mina KUROKI, Toshihisa MAEDA, Kenta MARUYAMA, Naoko MATSUMOTO, Takes hi MIYAJI, Takumi NAGAYAMA, Riiko NAGAYOSHI, Kayoko NAKAMURA, Akiharu NAKAGAWA, Daichi NAMIKAWA, Toshihiro OMODAKA, Tomoaki OYAMA, Seiichiro SAKAKIBARA, Rie SHIMIZU, Kasumi SORA, Miyuki TSUSHIMA, Kosuke UEDA, Yuya UEDA, Kazuyoshi YAMASHITA .  Statistical Properties of Stellar H2O Masers - Results of Three-Year Single-Dish Observations with the VERA Iriki Telescope .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1077 - 1131   2008.10Statistical Properties of Stellar H2O Masers - Results of Three-Year Single-Dish Observations with the VERA Iriki Telescope Reviewed

Takumi NAGAYAMA, Koji TAKEDA, Toshihiro OMODAKA, Hiroshi IMAI, Seiji KAMENO, Yoshiaki S OFUE, Akihiro DOI, Kenta FUJISAWA, Asao HABE, Mareki HONMA, Noriyuki KAWAGUCHI, Eiji KAWAI, Hideyuki KOBAYASHI, Yasuhiro KOYAMA, Yasuhiro MURATA, Kazuo SORAI, Hiroshi SUDOU, Hiroshi TAKABA, Sayaka TAMURA, Ken-ichi WAKAMATSU .  H2O Maser Outflow from the Red Supergiant Star NML Cygni Observed with Japanese VLBI Network .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1069 - 1075   2008.10H2O Maser Outflow from the Red Supergiant Star NML Cygni Observed with Japanese VLBI Network Reviewed

Toshihisa MAEDA, Hiroshi IMAI, Toshihiro OMODAKA, Hideyuki KOBAYASHI, Katsunori M. SHIBATA, Takeshi BUSHIMATA, Yoon Kyung CHOI, Tomoya HIROTA, Mareki HONMA, Koji HORIAI, Noritomo INOMATA, Kenzaburo IWADATE, Takaaki JIKE, Seiji KAMENO, Osamu KAMEYA, Ryuichi KAMOHARA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Seisuke KUJI, Tomoharu KURAYAMA, Seiji MANABE, Takes hi MIYAJI, Takumi NAGAYAMA, Akiharu NAKAGAWA, Kouichiro NAKASHIMA, Chung Sik OH, Tomoaki OYAMA, Satoshi SAKAI, Seiichiro SAKAKIBARA, Katsuhisa SATO, Rie SHIMIZU, Motonobu SHINTANI, Kasumi SORA, Hiroshi SUDA, Yoshiaki TAMURA, Kazuyoshi YAMASHITA .  A Bipolar Outflow of the M-Type Giant IRC-10414 Traced by H2O Maser Emission .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1057 - 1067   2008.10A Bipolar Outflow of the M-Type Giant IRC-10414 Traced by H2O Maser Emission Reviewed

Kosuke UEDA, Hiroshi IMAI, Shuji DEGUCHI, Ryuichi KAMOHARA, Toshihisa MAEDA, Naoko MATSUMOTO, Toshihiro OMODAKA .  Japanese VLBI Network Observations of SiO Masers in the M-Type Giant IRC-10414 .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1051 - 1056   2008.10Japanese VLBI Network Observations of SiO Masers in the M-Type Giant IRC-10414 Reviewed

Naoko MATSUMOTO, Toshihiro OMODAKA, Hiroshi IMAI, Rie SHIMIZU, Takeshi BUSHIMATA, Yoon Kyung CHOI, Tomoya HIROTA, Mareki HONMA, Noritomo INOMATA, Kenzaburo IWADATE, Takaaki JIKE, Seiji KAMENO, Osamu KAMEYA, Ryuichi KAMOHARA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Hideyuki KOBAYASHI, Seisuke KUJI, Tomoharu KURAYAMA, Toshihisa MAEDA, Seiji MANABE, Takes hi MIYAJI, Akiharu NAKAGAWA, Takumi NAGAYAMA, Koichiro NAKASHIMA, Chung Sik OH, Tomoaki OYAMA, Satoshi SAKAI, Seiichiro SAKAKIBARA, Tetsuo SASAO, Katsuhisa SATO, Katsunori M. SHIBATA, Motonobu SHINTANI, Yoshiaki SOFUE, Kasumi SORA, Hiroshi SUDA, Yoshiaki TAMURA, Miyuki TSUSHIMA, Kazuyoshi YAMASHITA .  Variable Asymmetry of the Circumstellar Envelope in IK Tauri Traced by SiO Maser Emission .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1039 - 1050   2008.10Variable Asymmetry of the Circumstellar Envelope in IK Tauri Traced by SiO Maser Emission Reviewed

Ryuichi KAMOHARA, Valentin BUJARRABAL, Takeshi BUSHIMATA, Yoon Kyung CHOI, Tomoya HIROTA, Mareki HONMA, Hiroshi IMAI, Kenzaburo IWADATE, Takaaki JIKE, Osamu KAMEYA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Mi Kyoung KIM, Masachika KIJIMA, Hideyuki KOBAYASHI, Seisuke KUJI, Tomoharu KURAYAMA, Seiji MANABE, Takeshi MIYAJI, Takumi NAGAYAMA, Akiharu NAKAGAWA, Chung Sik OH, Toshihiro OMODAKA, Tomoaki OYAMA, Satoshi SAKAI, Tetsuo SASAO, Katsuhisa SATO, Mayumi SATO, Katsunori M. SHIBATA,Yoshiaki TAMURA, Kazuyoshi YAMASHITA .  VERA Observations of SiO Masers in the Symbiotic Star R Aquarii .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1023 - 1029   2008.10VERA Observations of SiO Masers in the Symbiotic Star R Aquarii Reviewed

Akiharu NAKAGAWA, Miyuki TSUSHIMA, Kazuma ANDO, Takeshi BUSHIMATA, Yoon Kyung CHOI, Tomoya HIROTA, Mareki HONMA, Hiroshi IMAI, Kenzaburo IWADATE, Takaaki JIKE,7Seiji KAMENO, Osamu KAMEYA, Ryuichi KAMOHARA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Masachika KIJIMA, Mi Kyoung KIM, Hideyuki KOBAYASHI, Seisuke KUJI, Tomoharu KURAYAMA, Toshihisa MAEDA, Seiji MANABE, Kenta MARUYAMA, Makoto MATSUI, Naoko MATSUMOTO, Takes hi MIYAJI, Takumi NAGAYAMA, Kayoko NAKAMURA, Daisuke NYU, Chung Sik OH, Toshihiro OMODAKA, Tomoaki OYAMA, Nicolas PRADEL, Satoshi SAKAI, Tetsuo SASAO, Katsuhisa SATO, Mayumi SATO, Katsunori M. SHIBATA, Hiroshi SUDA, Yoshiaki TAMURA, Kousuke UEDA, YujiU ENO, Kazuyoshi YAMASHITA .  VLBI Astrometry of AGB Variables with VERA -A Semiregular Variable S Crateris - .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1013 - 1021   2008.10VLBI Astrometry of AGB Variables with VERA -A Semiregular Variable S Crateris - Reviewed

Mi Kyoung KIM, Tomoya HIROTA, Mareki HONMA, Hideyuki KOBAYASHI, Takeshi BUSHIMATA, Yoon Kyung CHOI, Hiroshi IMAI, Kenzaburo IWADATE, Takaaki JIKE, Seiji KAMENO, Osamu KAMEYA, Ryuichi KAMOHARA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Seisuke KUJI, Tomoharu KURAYAMA, Seiji MANABE, Makoto MATSUI, Naoko MATSUMOTO, Takeshi MIYAJI, Takumi NAGAYAMA, Akiharu NAKAGAWA, Chung Sik OH, Toshihiro OMODAKA, Tomoaki OYAMA, Satoshi SAKAI, Katsuhisa SATO, Tetsuo SASAO, Mayumi SATO, Katsunori M. SHIBATA, Yoshiaki TAMURA, Kazuyoshi YAMASHITA .  SiO Maser Observations toward Orion-KL with VERA .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 991 - 999   2008.10SiO Maser Observations toward Orion-KL with VERAReviewed

Mayumi SATO, Tomoya HIROTA, Mareki HONMA, Hideyuki KOBAYASHI, Tetsuo SASAO, Takeshi BUSHIMATA, Yoon Kyung CHOI, Hiroshi IMAI, Kenzaburo IWADATE, Takaaki JIKE, Seiji KAMENO, Osamu KAMEYA, Ryuichi KAMOHARA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Mi Kyoung KIM, Seisuke KUJI, Tomoharu KURAYAMA, Seiji MANABE, Makoto MATSUI, Naoko MATSUMOTO, Takeshi MIYAJI, Takumi NAGAYAMA, Akiharu NAKAGAWA, Kayoko NAKAMURA, Chung Sik OH, Toshihiro OMODAKA, Tomoaki OYAMA, Satoshi SAKAI, Katsuhisa SATO, Katsunori M. SHIBATA, Yoshiaki TAMURA, Kazuyoshi YAMASHITA .  Distance to NGC 281 in a Galactic Fragmenting Superbubble: Parallax Measurements with VERA .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 975 - 989   2008.10Distance to NGC 281 in a Galactic Fragmenting Superbubble: Parallax Measurements with VERA Reviewed

Tomoya HIROTA, Kazuma ANDO, Takeshi BUSHIMATA, Yoon Kyung CHOI, Mareki HONMA, Hiroshi IMAI, Kenzaburo IWADATE, Takaaki JIKE, Seiji KAMENO, Osamu KAMEYA, Ryuichi KAMOHARA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Masachika KIJIMA, Mi Kyoung KIM, Hideyuki KOBAYASHI, Seisuke KUJI, Tomoharu KURAYAMA, Seiji MANABE, Makoto MATSUI, Naoko MATSUMOTO, Takes hi MIYAJI, Atsushi MIYAZAKI, Takumi NAGAYAMA, Akiharu NAKAGAWA, Daichi NAMIKAWA, Daisuke NYU, Chung Sik OH, Toshihiro OMODAKA, Tomoaki OYAMA, Satoshi SAKAI, Tetsuo SASAO, Katsuhisa SATO, Mayumi SATO, Katsunori M. SHIBATA, Yoshiaki TAMURA, Kosuke UEDA, Kazuyoshi YAMASHITA .  Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA III. IRAS 22198+6336 in Lynds 1204 G .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 961 - 974   2008.10Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA III. IRAS 22198+6336 in Lynds 1204 G Reviewed

Jun-ichi Nakashima, Shuji Deguchi, Hiroshi Imai, Athol Kemball .  Molecular line observations of the SiO maser source IRAS 19312+1950 .  Organic Matter in Space, Proceedings of the International Astronomical Union251   165 - 166   2008.10Molecular line observations of the SiO maser source IRAS 19312+1950

K. Motogi, Y. Watanabe, Kazuo Sorai, Asao Habe, Mareki Honma, Hiroshi Imai, Aya Yamauchi, Hideyuki Kobayashi, Kenta Fujisawa, Toshihiro Omodaka, Hiroshi Takaba, Katsunori M. Shibata, T. Minamidani, Ken-ichi Wakamatsu, Hiroshi Sudou, Eiji Kawai, Yasuhiro Koyama .  Microstructure and kinematics of H2O masers in the massive star-forming region IRAS 06061+2151 .  Publications of the Astronomical Society of Japan390 ( 2 ) 523 - 534   2008.10Microstructure and kinematics of H2O masers in the massive star-forming region IRAS 06061+2151Reviewed

Yoon Kyung CHOI, Tomoya HIROTA, Mareki HONMA, Hideyuki KOBAYASHI, Takeshi BUSHIMATA, Hiroshi IMAI, Kenzaburo IWADATE, Takaaki JIKE, Seiji KAMENO, Osamu KAMEYA, Ryuichi KAMOHARA, Yukitoshi KAN-YA, Noriyuki KAWAGUCHI, Masachika KIJIMA, Mi Kyoung KIM, Seisuke KUJI, Tomoharu KURAYAMA, Seiji MANABE, Kenta MARUYAMA, Makoto MATSUI, Naoko MATSUMOTO, Takeshi MIYAJI, Takumi NAGAYAMA, Akiharu NAKAGAWA, Kayoko NAKAMURA, Chung Sik OH, Toshihiro OMODAKA, Tomoaki OYAMA, Satoshi SAKAI, Tetsuo SASAO, Katsuhisa SATO, Mayumi SATO, Katsunori M. SHIBATA, Yoshiaki TAMURA, Miyuki TSUSHIMA, Kazuyoshi YAMASHITA .  Distance to VY Canis Majoris with VERA .  Publicaitons of the Astronomical Society of Japan60 ( 5 ) 1007 - 1012   2008.10Distance to VY Canis Majoris with VERA Reviewed

Jin-Hua He, Hiroshi Imai, Tatsuhiko Hasegawa, I. T., Campbell, Simon., Jun-ichi Nakashima .  First detection of CO lines in a water fountain star .  Astronomy & Astrophysics488 ( 2 ) L21 - L24   2008.9First detection of CO lines in a water fountain starReviewed

Takumi Nagayama, Akiharu Nakagawa, Hiroshi Imai, Toshihiro Omodaka, Yoshiaki Sofue .  VLBI Observations of Water Masers in Onsala1: Massive Binary Star-Forming Site? .  Publications of the Astronomical Society of Japan60 ( 2 ) 183 - 190   2008.4VLBI Observations of Water Masers in Onsala1: Massive Binary Star-Forming Site?Reviewed

Hiroshi Imai, Takahiro Fujii, Toshihiro Omodaka, Shuji Deguchi .  JVN observations of H2O masers around the evolved star IRAS22480+6002 .  Publicaitons of the Astronomical Society of Japan60 ( 1 ) 55 - 62   2008.3JVN observations of H2O masers around the evolved star IRAS22480+6002Reviewed

Tomoaki Oyama, Makoto Miyoshi, Shuji Deguchi, Hiroshi Imai, Zhi-Qiang Shen .  A Measurement of Proper Motions of SiO Maser Sources in the Galactic Center with the VLBA .  Publicaitons of the Astronomical Society of Japan60 ( 1 ) 11 - 22   2008.3A Measurement of Proper Motions of SiO Maser Sources in the Galactic Center with the VLBAReviewed

Tomoya Hirota, Takeshi Bushimata, Yoon Kyung Choi, Mareki Honma, Hiroshi Imai, Kenzaburo Iwadate, Takaaki Jike, Osamu Kameya, Ryuichi Kamohara, Yukitoshi Kan-ya, Noriyuki Kawaguchi, Masachika Kijima, Hideyuki Kobayashi, Seisuke Kuji, Tomoharu Kurayama, Seiji Manabe, Takeshi Miyaji, Takumi Nagayama, Akiharu Nakagawa, Chung Sik Oh, Toshihiro Omodaka, Tomoaki Oyama, Satoshi Sakai, Tetsuo Sasao, Katsuhisa Sato, Katsunori M. Shibata, Yoshiaki Tamura, Kazuyoshi Yamashita .  Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA II SVS13 in NGC1333 .  Publications of the Astronomical Society of Japan60 ( 1 ) 37 - 44   2008.3Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA II SVS13 in NGC1333Reviewed

Hiroshi Imai .  Stellar molecular jets traced by maser emission .  International Astronomical Union242   279 - 286   2008.1Stellar molecular jets traced by maser emissionReviewed

Hiroshi Imai, Kohichiro Nakashima, Takeshi Bushimata, Yoon Kyung Choi, Tomoya Hirota, Mareki Honma, Koji Horiai, Noritomo Inomata, Kenzaburo Iwadate, Takaaki Jike, Osamu Kameya, Ryuichi Kamohara, Yukitoshi Kan-ya, Noriyuki Kawaguchi, Masachika Kijima, Hideyuki Kobayashi, Seisuke Kuji, Tomoharu Kurayama, Seiji Manabe, Takeshi Miyaji, Takumi Nagayama, Akiharu Nakagawa, Chung Sik Oh, Toshihiro Omodaka, Tomoaki Oyama, Satoshi Sakai, Seiichiro Sakakibara, Katsuhisa Sato, Tetsuo Sasao, Katsunori M. Shibata, Rie Shimizu, Motonobu Shintani, Yoshiaki Sofue, Kasumi Sora, Hiroshi Suda, Yoshiaki Tamura, Miyuki Tsushima, Yuji Ueno, Kazuyoshi Yamashita .  Astrometry of H2O Masers in Nearby Star-Forming Regions with the VERA -- I. IRAS 16293-2422 in ρ Oph East .  Publicaitons of the Astronomical Society of Japan59 ( 6 ) 1107 - 1113   2007.12Astrometry of H2O Masers in Nearby Star-Forming Regions with the VERA -- I. IRAS 16293-2422 in ρ Oph EastReviewed

Hiroshi Imai, Raghvendra Sahai, Mark Morris .  The spatio-kinematical structure and distance of the pre-planetary nebula IRAS 19134+2131 .  Astrophysical Journal669   424 - 434   2007.11The spatio-kinematical structure and distance of the pre-planetary nebula IRAS 19134+2131Reviewed

Tomoya Hirota, Takeshi Bushimata, Yoon Kyung Choi, Mareki Honma, Hiroshi Imai, Kenzaburo Iwadate, Takaaki Jike, Seiji Kameno, Osamu Kameya, Ryuichi Kamohara, Yukitoshi Kan-Ya,Noriyuki Kawaguchi, Masachika Kijima, Mi Kyoung Kim, Hideyuki Kobayashi, Seisuke Kuji, Tomoharu Kurayama, Seiji Manabe, Kenta Maruyama, Makoto Matsui, Naoko Matsumoto, Takeshi Miyaji, Takumi Nagayama, Akiharu Nakagawa, Kayoko Nakamura, Chung Sik Oh, Toshihiro Omodaka, Tomoaki Oyama, Satoshi Sakai, Tetsuo Sasao, Katsuhisa Sato, Mayumi Sato, Katsunori M. Shibata, Motonobu Shintani, Yoshiaki Tamura, Miyuki Tsushima, Kazuyoshi Yamashita .  Distance to Orion KL Measured with VERA .  Publicaitons of the Astronomical Society of Japan59 ( 5 ) 897 - 903   2007.10Distance to Orion KL Measured with VERAReviewed

Mareki Honma, Takeshi Bushimata, Yoon Kyung Choi, Tomoya Hirota, Hiroshi Imai, Kenzaburo Iwadate, Takaaki Jike, Osamu Kameya, Ryuichi Kamohara, Yukitoshi Kan-Ya, Noriyuki Kawaguchi, Masachika Kijima, Hideyuki Kobayashi, Seisuke Kuji, Tomoharu Kurayama, Seiji Manabe, Takeshi Miyaji, Takumi Nagayama, Akiharu Nakagawa, Chung Sik Oh, Toshihiro Omodaka, Tomoaki Oyama, Satoshi Sakai, Katsuhisa Sato, Tetsuo Sasao, Katsunori M. Shibata, Motonobu Shintani, Hiroshi Suda, Yoshiaki Tamura, Miyuki Tsushima, Kazuyoshi Yamashita .  Astrometry of Galactic Star Forming Region Sharpless 269 with VERA: Parallax Measurements and Constraint on Outer Rotation Curve .  Publicaitons of the Astronomical Society of Japan59 ( 5 ) 889 - 895   2007.10Astrometry of Galactic Star Forming Region Sharpless 269 with VERA: Parallax Measurements and Constraint on Outer Rotation CurveReviewed

Mayumi Sato, T. Hirota, Mareki Honma, Hideyuki Kobayashi, Tetsuo Sasao, Takeshi Bushimata, Yoon Kyung Choi, Hiroshi Imai, Kenzaburo Iwadate, Takaaki Jike, Seiji Kameno, Osamu Kameya, Ryuichi Kamohara, Yukitoshi Kan-Ya, Niriyuki Kawaguchi, Masachika Kijima, Mi Kyoung Kim, Seisuke Kuji, Tomoharu Kurayama, Seiji Manabe, Kenta Maruyama, Makoto Matsui, Naoko Matsumoto, Takeshi Miyaji, Takumi Nagayama, Akiharu Nakagawa, Kayoko Nakamura, Chung-Sik Oh, Toshihiro Omodaka, Tomoaki Oyama, Satoshi Sakai, Katsuhisa Sato, Katsunori M. Shibata, Motonobu Shintani, Yoshiaki Tamura, Miyuki Tsushima, Kazuyoshi Yamashita .  Absolute Proper Motions of H2O Masers Away from the Galactic Plane Measured with VERA in the "Superbubble" Region NGC 281 .  Publicaitons of the Astronomical Society of Japan59 ( 3 ) 743 - 751   2007.6Absolute Proper Motions of H2O Masers Away from the Galactic Plane Measured with VERA in the "Superbubble" Region NGC 281Reviewed

Noritomo Inomata, Hiroshi Imai, Toshihiro Omodaka .  A Pole-on Bipolar Outflow from the AGB Star WX Piscium .  Publication of the Astronomical Society of Japan59 ( 3 ) 779 - 809   2007.6A Pole-on Bipolar Outflow from the AGB Star WX PisciumReviewed

Shuji Deguchi, Takahiro Fujii, Yoshifusa Ita, Hiroshi Imai, Hideyuki Izumiura, Osamu Kameya, Noriyuki Matsunaga, Atsushi Miyazaki, Akihiro Mizutani, Yoshikazu Nakada, Jun-ichi Nakashina, Anders Winnberg .  SiO Maser Search off the Galactic Plane .  Publications of the Astronomical Society of Japan59 ( 3 ) 559 - 587   2007.6SiO Maser Search off the Galactic PlaneReviewed

Hiroshi Imai, Toshihiro Omodaka, Tomoya Hirota, Tomofumi Umemoto, Kazuo Sorai, Tetsuro Kondo .  A Collimated Jet and an Infalling-Rotating Disk in G192.16-3.84 Traced by H2O Maser Emission .  Publications of the Astronomical Society of Japan58 ( 5 ) 883 - 892   2006.10A Collimated Jet and an Infalling-Rotating Disk in G192.16-3.84 Traced by H2O Maser EmissionReviewed

Xi Chen Xi, Zhigiang Shen, Ryuichi Kamohara Ryuichi, Hiroshi Imai .  INWARD MOTIONS OF THE COMPACT SiO MASERS AROUND VX SAGITTARII .  Astrophysical Journal640 ( 1 ) 982 - 994   2006.4INWARD MOTIONS OF THE COMPACT SiO MASERS AROUND VX SAGITTARIIReviewed

Kazuya Hachisuka, Andreas Brunthaler, Karl M. Menten, Mark J. Reid, Hiroshi Imai, Yoshiaki Hagiwara, Makoto Miyoshi, Shinji Horiuchi, Tetsuo Sasao .  WATER MASER MOTIONS IN W3(OH) AND A DETERMINATION OF ITS DISTANCE .  Astrophysical Journal645 ( 1 ) 337 - 344   2006.4WATER MASER MOTIONS IN W3(OH) AND A DETERMINATION OF ITS DISTANCEReviewed

Wouter H. T. Vlemmings, Philip J. Diamond, Hiroshi Imai .  A magnetically collimated jet from an evolved star .  Nature440   58 - 60   2006.3A magnetically collimated jet from an evolved starReviewed

Mareki Honma, Takeshi Bushimata, Yoon Kyung Choi, Takahiro Fujii, Tomoya Hirota, Koji Horiai, Hiroshi Imai, Noritomo Inomata, Jose Ishitsuka, Kenzaburo Iwadate, Takaaki Jike, Osamu Kameya, Ryuichi Kamohara, Yukitoshi Kan-Ya, Noriyuki Kawaguchi, Masachika Kijima, Hideyuki Kobayashi, Seisuke Kuji, Tomoharu Kurayama, Seiji Manabe, Takeshi Miyaji, Akiharu Nakagawa, Kouichirou Nakashima, Chung Sik Oh, Toshihiro Omodaka, Tomoaki Oyama, Maria Rioja, Satoshi Sakai, katsuhisa Sato, Tetsuo Sasao, Katsunori M. Shibata, Rie Shimizu, Kasumi Sora, Hiroshi Suda, Yoshiaki Tamura, Kazuyoshi Yamashita .  Multi-Epoch VERA Observations of OH43.8-0.1 .  Publications of the Astronomical Society of Japan57 ( 4 ) 595 - 603   2005.8Multi-Epoch VERA Observations of OH43.8-0.1Reviewed

Hiroshi Imai, Jun-ichi Nakashima, Philip J. Diamond, SHuji Deguchi, Atsushi Miyazaki .  A BICONICALLY EXPANDING FLOW IN W43A TRACED BY SiO MASER EMISSION .  Astrophysical Journal622 ( 1 ) L125 - L128   2005.4A BICONICALLY EXPANDING FLOW IN W43A TRACED BY SiO MASER EMISSIONReviewed

Hiroshi Imai, Anuj Sarma .  THE KINEMATICS, PHYSICAL CONDITION AND MAGNETIC FIELD OF THE W3 IRS5 REGION .  Dense Molecular Gas Around Protostars and in Galactic Nuclei, Springer295   271 - 274   2005.3THE KINEMATICS, PHYSICAL CONDITION AND MAGNETIC FIELD OF THE W3 IRS5 REGIONReviewed

Shuji Deguchi, Takahiro Fujii, Ian S. Glass, Hiroshi Imai, Yoshifusa Ita, Hideyuki Izumiura, Osamu Kameya, Atsushi Miyazaki, Yoshikazu Nakada, Jun-ichi Nakashima .  SiO Maser Survey of IRAS Sources in the Inner Galactic Disk .  Publicaitons of the Astronomical Society of Japan56 ( 5 ) 765 - 802   2004.10SiO Maser Survey of IRAS Sources in the Inner Galactic DiskReviewed

Hiroshi ImaiI, Mark Morris, Raghvendra Sahai, Kazuya Hachisuka, Jose Ruyman Azollini Fellipe .  The kinematics of water masers in the stellar outflow source, IRAS 19134+2131 .  Astronomy and Astrophysics European Journal420 ( 1 ) 265 - 271   2004.5The kinematics of water masers in the stellar outflow source, IRAS 19134+2131Reviewed

Shuji Deguchi, Hiroshi Imai, Takahiro Fujii, Ian S. Glass, Yoshifusa Ita, Hideyuki Izumiura, Osamu Kameya, Atsushi Miyazaki, Yoshikazu Nakada, Jun-ichi Nakashima .  SiO Maser Survey of the Large-Amplitude Variables in the Galactic Center .  Publicaitons of the Astronomical Society of Japan56 ( 3 ) 261 - 294   2004.4SiO Maser Survey of the Large-Amplitude Variables in the Galactic CenterReviewed

Mareki Honma, Yoon Kyung Choi, Takechi Bushimata, Takahiro Fujii, Tomoya Hirota, Koji Horiai, Hiroshi Imai, Noritomo Inomata, Jose Ishitsuka, Kenzaburo Iwadate, Takaaki Jike, Osamu Kameya, Ryuichi Kamohara, Yukitoshi Kan-Ya, Noriyuki Kawaguchi, Hideyuki Kobayashi, Seisuke Kuji, Tomoharu Kurayama, Seiji Manabe, Takeshi Miyaji, Akiharu Nakagawa, Kouichirou Nakashima, Riiko Nagayoshi, Toshihiro Omodaka, Tomoaki Oyama, Maria Rioja, Satoshi Sakai, Sei-ichiro Sakakibara, Katsuhisa Sato, Tetsuo Sasao, Katsunori M. Shibata, Rie Shimizu, Kasumi Sora, Hiroshi Suda, Yoshiaki Tamura, Kazuyoshi Yamashita .  VERA Observation of the W49N H2O Maser Outburst in 2003 October .  Publicaitons of the Astronomical Society of Japan56 ( 1 ) L15 - L18   2004.1VERA Observation of the W49N H2O Maser Outburst in 2003 OctoberReviewed

Imai, H., Horiuchi S., Deguchi S., Kameya O. .  LINEAR POLARIZATION OBSERVATIONS OF WATER MASERS IN W3 IRS 5 .  The Astrophysical Journal595   285 - 293   2003LINEAR POLARIZATION OBSERVATIONS OF WATER MASERS IN W3 IRS 5Reviewed

Imai, H., Shibata K.M., Marvel, K.B., Diamond P.J., Sasao T., Miyoshi M., Inoue M., Migenes V., Murata Y. .  THE THREE-DIMENSIONAL KINEMATICS OF WATER MASERS AROUND THE SEMIREGULAR VARIABLE RT VIRGINIS .  The Astrophysical Journal590   460 - 472   2003THE THREE-DIMENSIONAL KINEMATICS OF WATER MASERS AROUND THE SEMIREGULAR VARIABLE RT VIRGINISReviewed

Imai, H., Watanabe T., Omodaka, T., Nishio M., Kameya O., Miyaji T., Nakajima J. .  3-D Kinematics of Water Masers in the W51A Region .  Publications of the Astronomical Society of Japan54 ( 5 ) 741 - 755   2002.103-D Kinematics of Water Masers in the W51A RegionReviewed

Imai, H., Obara K., Diamond P.J., Omodaka T., Sasao T. .  A collimated jet of molecular gas from a star on the asymptotic-giant-branch .  Nature417   829 - 831   2002.6A collimated jet of molecular gas from a star on the asymptotic-giant-branchReviewed

Imai, H., Deguchi S., Fujii T., Glass I. S., Ita Y., Izumiura H., Kameya O., Miyazaki A., Nakada Y., Nakashima J. .  Detection of SiO Masers from the Large-Amplitude Variables in the Galactic Nuclear Disk .  Publications of the Astronomical Society of Japan54 ( 2 ) L19 - L23   2002.4Detection of SiO Masers from the Large-Amplitude Variables in the Galactic Nuclear DiskReviewed

Imai, H., Deguchi S., Sasao T. .  MICROSTRUCTURE OF WATER MASERS IN W3 IRS 5 .  The Astrophysical Journal567   971 - 979   2002.3MICROSTRUCTURE OF WATER MASERS IN W3 IRS 5Reviewed

Ishitsuka J. K., Imai, H., Omodaka T., Ueno M., Kameya O., Sasao T., Morimoto M., Miyaji T., Nakajima J., Watanabe T. .  VLBI Monitoring Observations of Water Masers around the Semi-Regular Variable Star R Crateris .  Publications of the Astronomical Society of Japan53 ( 6 ) 1231 - 1238   2001.12VLBI Monitoring Observations of Water Masers around the Semi-Regular Variable Star R CraterisReviewed

Sudou H, Omodaka T., Imai, H., Sasao T., Takaba H., Nishio M., Hasegawa W., Nakajima J. .  VLBI Observations of Water Masers in the Circumstellar Envelope of IRC +60169 .  Publications of the Astronomical Society of Japan54 ( 5 ) 757 - 764   2001.10VLBI Observations of Water Masers in the Circumstellar Envelope of IRC +60169Reviewed

Imai, H., Ishihara Y., Kameya O., Nakai N. .  Water Maser Survey in the Andromeda Galaxy .  Publications of the Astronomical Society of Japan53 ( 3 ) 489 - 493   2001Water Maser Survey in the Andromeda GalaxyReviewed

Imai Hiroshi, et al. .  Snapshot VLBI observations of SiO v=1 and v=2 (J=1--0) Maser Sources .  Publications of the Astronomical Society of Japan53 ( 2 ) 259 - 273   2001Snapshot VLBI observations of SiO v=1 and v=2 (J=1--0) Maser SourcesReviewed

Honma M., Oyama T., Hachisuka K., Sawada S. S., Sebata K., Miyoshi M., Kameya O., Manabe S., Kawaguchi N., Sasao T., Kameno S., Fujisawa K., Shibata K. M., Bushimata T., Miyaji T., Kobayashi H., Inoue M., Imai, H., et al. .  J-Net Galactic Plane Survey of VLBI Radio Sources .  Publications of the Astronomical Society of Japan52 ( 5 ) 631 - 643   2000.10J-Net Galactic Plane Survey of VLBI Radio SourcesReviewed

Hiroshi Imai, et al. .  KINEMATICS AND DISTANCE OF WATER MASERS IN W3 IRS5 .  The Astrophysical Journal538   751 - 765   2000KINEMATICS AND DISTANCE OF WATER MASERS IN W3 IRS5Reviewed

Hiroshi Imai .  Internal Motions and Fine Structure of Astronomical Masers -- Application to Stellar Astrophysics and High Precision Astrometry -- .      1999.3Internal Motions and Fine Structure of Astronomical Masers -- Application to Stellar Astrophysics and High Precision Astrometry --

Imai, H., Deguchi S., Miyoshi M. .  VLBA Observation of SiO Masers in the M Giant IRC-10414 .  Publications of the Astronomical Society of Japan51 ( 5 ) 587 - 593   1999VLBA Observation of SiO Masers in the M Giant IRC-10414Reviewed

Imai, H., Iwata T., Miyoshi M. .  Rotation-Infall Motion around the Protostar IRAS16293-2422 .  Publications of the Astronomical Society of Japan51 ( 4 ) 473 - 477   1999Rotation-Infall Motion around the Protostar IRAS16293-2422Reviewed

Imai Hiroshi, et al. .  Measurement of shifts in line-of-sight velocities of stellar water masers using VLBI .  Astronomy and Astrophisics319   L1 - L4   1997.9Measurement of shifts in line-of-sight velocities of stellar water masers using VLBIReviewed

Imai Hiroshi, et al. .  Detection of compact water maser spots around late-type stars .  Astronomy and Astrophisics317   L67 - L70   1997.7Detection of compact water maser spots around late-type starsReviewed

年老いた星からの「噴水」：AGB星からの分子ガスジェットの発見 Reviewed

今井　裕

天文月報   95 ( 12 )   589 - 595   2002

恒星の進化と水メーザー

今井　裕

鹿島宇宙通信センター宇宙電波観測用大型アンテナ成果報告   47   31 - 39   2001

水蒸気メーザー源のVLBI観測その２: 星形成フローの三次元運動を眺める

今井　裕

天文月報   93 ( 6 )   307 - 312   2000

当事者から眺めたPD・OD問題 Reviewed

今井　裕

天文月報   93 ( 2 )   93 - 98   2000

水蒸気メーザー源のVLBI観測：太陽系スケール原始星周辺ガス回転降着運動 Reviewed

今井　裕

天文月報   93 ( 1 )   16 - 23   2000

今井　裕   HINOTORI Status Report  

2022年度宇宙電波懇談会シンポジウム 「2030年代の電波天文学」  2022.12  VLBI懇談会

今井　裕   天の川銀河中心部に対するVERAアストロメトリ  

2022年度宇宙電波懇談会シンポジウム 「2030年代の電波天文学」  2022.12  VLBI懇談会

IMAI Hiroshi   Scientific operation of the HINOTORI system   International conference

ALMA/ASTE/NRO Users Meeting  2022.12  国立天文台東アジアアルマ地域センター

今井　裕   HINOTORI システムによる星周メーザー源モニター観測  

2022年度連星・変光星研究会  2022.12 

IMAI Hiroshi   Double-/triple-bands simultaneous observation system with perforated dichroic filter plates equipped for the Nobeyama 45 m radio telescope   International conference

アジアー太平洋マイクロ波会議2022  2022.12 

今井　裕   HINOTORI (Hybrid Integration Project in Nobeyama, Triple-band Oriented) 進捗報告  

日本天文学会秋季年会  2022.9  日本天文学会

今井　裕   銀河系中心電波源astrometry に基づく JASMINE との連携計画  

日本天文学会秋季年会  2022.9 

氏原秀樹   次世代マイクロ波放射計兼広帯域VLBI 受信システムの開発(III)  

日本天文学会秋季年会  2022.9  日本天文学会

HINOTORI, FLASHING, and ESTEMA   International coauthorship

2022.3 

氏原秀樹, 市川隆一, 関戸衛, 宗包浩志, 宮原伐折羅, 小林知勝, 寺家孝明, 小山友明, 竹内央, 今井裕   次世代マイクロ波放射計兼広帯域VLBI 受信システムの開発(II)  

日本天文学会2022年春季年会  2022.3  日本天文学会

小山友明、鈴木駿策、河野祐介、山内彩、寺家孝明、秦和弘、亀谷收、萩原喜昭、今井裕、他KaVA, EAVN メンバー   VERA-upgrade for EAVN and GVLBI 計画の進捗V  

日本天文学会2022年春季年会  2022.3  日本天文学会

IMAI Hiroshi   HINOTORI toward VLBI in the SKA era   International conference

VLBI in the SKA Era  2022.2  SKA Observatory, ICRAR, CSIRO

ESTEMA (EAVN Synthesis of Stellar Maser Animations)   International coauthorship

2022.1 

IMAI Hiroshi   HINOTORI Status Report 2021   International conference

ALMA/45m/ASTE Users Meeting FY2021  2021.12 

甘田 渓, 今井 裕, 濱江勇希, 中島圭佑, 沈 嘉耀, Daniel Tafoya, Lucero Uscanga, Jos ́e Francisco G ́omez, Garbor Orosz, Ross Burns   新SiOメーザー検出が示唆する「宇宙の噴水」天体の進化急速進行   International coauthorship

日本天文学会2021年秋季年会  2021.9  日本天文学会

氏原秀樹, 市川隆一, 関戸衛, 宗包浩志, 宮原伐折羅, 小林知勝, 寺家孝明, 小山友明, 竹内央, 今井裕   次世代マイクロ波放射計兼広帯域VLBI 受信システムの開発(I)  

日本天文学会2021年秋季年会  2021.9  日本天文学会

今井　裕   高感度ミリ波ＶＬＢＩ撮像による星間分子ガス中の超微細空間構造の探求  

新学術領域「星惑星形成」 後半戦キックオフミーティング   2021.7  新学術領域「星惑星形成」

Hideki UJIHARA, Shinsuke SATOH, Yusaku OHTA, Basara MIYAHARA, Hiroshi MUNEKANE, Tomokazu KOBAYASHI, Takeshi NAGASAKI, Osamu TAJIMA, Kentaro ARAKI, Takuya TAJIRI, Takeshi MATSUSHIMA, Hiroshi TAKIGUCHI, Nobuo MATSUSHIMA, Tatsuya MOMOTANI, Kenji UTSUNOMIYA, Mamoru SEKIDO, Takaaki JIKE, Tomoaki OYAMA, Hiroshi TAKEUCHI, Hiroshi IMAI   Development of Wideband Receiver for Novel Ground-based Microwave Radiometer -field experiments of the new 20-60 GHz wide-band receiver and its implications to new development of the wide-band VLBI receiver -   International conference

Scientific Assembly of the International Association of Geodesy 2021  2021.6  International Association of Geodesy

IMAI Hiroshi, FLASHING Team   FLASHING (Finest Legacy Acquisitions of H2O-/SiO-maser Ignitions by Nobeyama Generation)   International conference

East Asian VLBI Workshop 2021 

甘田渓, 今井 裕, NESS Team   NESS (Nearby Evolved Stars Survey)で観測された冷たいAGB星周縁の統計的性質  

連星・変光星研究会2020 

濱江勇希, 今井 裕, 甘田 渓, FLASHING Team   FLASHING (Finest Legacy Acquisitions of H2O-/SiO-maser Ignitions by Nobeyama Generation)  

連星・変光星研究会2020 

IMAI Hiroshi, et al.   FLASHING (Finest Legacy Acquisitions of H2O-/SiO-maser Ignitions by Nobeyama Generation)  

ALMA/ASTE/NRO Users Meeting 

TSUTSUMI Toshihisa, NIINUMA Kotaro, IMAI Hiroshi, et al.   Construction and test observation of a simultaneous 3-band VLBI observing system on the Nobeyama 45-m telescope  

ALMA/45m/ASTE Users Meeting FY2020  EA-ARC

AMADA Kei, IMAI Hiroshi, NESS Team   Statistical properties of cold circumstellar envelops observed in NESS(Nearby Evolved Stars Survey)  

ALMA/45m/ASTE Users Meeting FY2020  EA-ARC

Hiroshi Imai   ESTEMA, HINOTORI, and FLASHING   Invited

Nobeyama Science Workshop 2020 

今井裕, 濱江勇希, 甘田渓, FLASHINGチーム   ミラ型変光星かんむり座S 星の星周縁における衝撃波伝播パターンの発見  

日本天文学会2020年秋季年会 

甘利涼湖, 堤稔喜, 藤澤健太, 新沼浩太郎, 青木貴弘, 澤田-佐藤聡子, 今井裕, 小川英夫, 西村淳, 岡田望, 上田翔汰, 高嶋辰幸, 増井翔, 近藤滉, 松本健, 鳥居和史, 宮 澤千栄子, 金子紘之   野辺山45 m電波望遠鏡における3帯域同時観測に向けたTZ受信機の改修  

日本天文学会2020年秋春年会  日本天文学会

今井 裕, 宇野友理, 前山大地, 山口諒祐, 甘田 渓, 濱江勇希, Ross Burns, Gabor Orosz   『宇宙の間欠泉』から新たに出現した双極高速ジェットからの同時噴出ガス塊  

連星系・変光星研究会2019 

今井 裕, 宇野友理, 前山大地, 山口諒祐, 甘田 渓, 濱江勇希, Ross Burns, Gabor Orosz   『宇宙の間欠泉』から新たに出現した双極高速ジェットからの同時噴出ガス塊  

VLBI懇談会シンポジウム2019 

IMAI Hiroshi   Current progress in ESTEMA and relevant EAVN commissioning   Invited International conference

12th East Asian VLBI Workshop 

今井 裕, 宇野友理, 前山大地, 山口諒祐, 甘田 渓, 濱江勇希, Ross Burns, Gabor Orosz, Jos ?e Francisco Go ?mez, Daniel Tafoya, Lucero Uscanga   「宇宙の間欠泉」から新たに出現した双極高速ジェットからの同時噴出ガス塊  

日本天文学会2019年秋季年会  日本天文学会

岳藤一宏, 米倉覚則, 齋藤悠, 青木貴弘, 藤澤健太, 杉山孝一郎, 今井裕   拡張相互相関分光法による 6.7GHz メタノールメーザー解析  

日本天文学会2019年秋季年会  日本天文学会

甘田渓, 深谷紗希子, 今井裕, 新永浩子, Peter Scicluna, Naomi Hirano, Francisca Kemper, Sundar Srinivasan, Sofia Wallstrom, Thavisha Dharmawardena, NESS Team   野辺山 45m 電波望遠鏡を使った AGB 星周縁の 12CO, 13CO 輝線の撮像  

日本天文学会2019年秋季年会  日本天文学会

今井　裕   HINOTORI and its Early Single-dish Science   Invited

Nobeyama Science Workshop -令和元年- 

今井 裕   電波アストロメトリの将来を考察する   Invited

SKA-Japanシンポジウム 2019 

H. Imai, H. Shinnaga, S.Sawada-Satoh, D. Maeyama, Y. Uno, A. Nakagawa, K. Niinuma, T. Aoki, T. Tsutsumi, K. Fujisawa, H. Ogawa, T. Manabe, N. Okada, K. Kimura, M. Chiba, I. Hashimoto, D. Yasuda, T. Ohnishi, T. Oyama, Y. Kono, N. Sakai, T. Hirota, Y. Tamura, K.M. Shibata, K. Sunada, M. Honma (Mizusawa, NAOJ), T. Minamidani, Y. Miyamoto, K. Miyazawa, C. Miyazawa、Y. Asaki, S. Kameno, Y. Yonekura, K. Takefuji   HINOTORI Status in 2018  

ALMA/ASTE/NRO Users Meeting 

今井　裕, Daniel Tafoya, 中島淳一, Gabor Orosz, Bosco Yung, Jos ?e-Francisco Gom ?ez   W43A: AGB星縁を数10年間で 高速双極ジェットが ぶち抜いていく様子  

連星・変光星・低温度星研究会 

今井　裕, Daniel Tafoya, 中島淳一, Gabor Orosz, Bosco Yung, Jos ?e-Francisco Gom ?ez   W43A: Shaping the envelope of an AGB star with a collimated jet  

VLBI懇談会シンポジウム2018 

岡田 望 , 橋本 育実 , 保田 大介 , 木村 公洋 , 千葉 正克 , 真鍋 武嗣 , 大西 利和 , 小川 英夫, 南谷 哲宏 , 宮本 祐介, 宮澤 和 彦, 宮澤 千栄子, 小山 友明, 澤田-佐藤 聡子, 岸本 直子, 前山 大地 , 今井 裕   22/43 GHz帯フィルタによる野辺山45 m鏡二周波同時観測について -フィルタ開発からコミッショニング観測まで-  

VLBI懇談会シンポジウム2018 

今井　裕   HINOTORIと3 mm 帯VLBI観測で目指すもの   Invited

薩長同盟天文学研究会 

木村公洋, 岡田望, 橋本育実, 小川英夫, 真鍋武嗣, 今井裕   22/43GHz 帯分離および43/86GHz 帯分離 Perforated Plate 型周波数フィルター の開発評価  

日本天文学会秋季年会 

岡田 望, 橋本 育実, 保田 大介, 木村 公洋, 千葉 正克, 真鍋 武嗣, 大西 利和, 小川 英夫, 南谷 哲宏, 宮本 祐介, 宮澤 和彦, 宮澤 千栄子, 小山 友明, 澤田-佐藤 聡子, 岸本 直子, 前山 大地, 今井 裕   野辺山45m電波望遠鏡における 22/43 GHz 帯同時観測評価  

日本天文学会秋季年会 

Hiroshi Imai 他   Status Reports on EAVN Evolved Stars Science Working Group and ESTEMA   International conference

East Asia VLBI Workshop 

Hiroshi Imai   Exploration of extended circmstelar matter around dying stars   Invited International conference

NOEMA/IRAM30m Workshop 

今井　裕   SKA-VLBI Concept   Invited

SKA時代のVLBIサイエンス 

Hiroshi Imai   Towards decadal continuous viewing of circumstellar maser sources   Invited International conference

Internationa Astronomical Union Symposium 336  Internationa Astronomical Union

Miyako Oyadomari, Hiroshi Imai,   Correlation of the relative SiO maser distributions with the stellar light curves   International conference

13th European VLBI Network Meeting 

Gabor Orosz, Hiroshi Imai, Richard Dodson, Maria Rioja, Dieter Engeles, Sandra Etoka, Sandor Frey   MultiView ? a pilot study for precise VLBI astrometry at low frequencies using multiple calibrators   International conference

13th European VLBI Network Meeting 

"Hiroshi Imai, Tomoaki Oyama, Yusuke Kono, Tomoya Hirota, Takumi Nagayama, Syunsaki Suzuki, Masahiro Kanaguchi, Takashi Nishikawa, Noriyuki Kawaguchi, Hideyuki, Kobayashi (National Astronomical Observatory of Japan) Miyako Oyadomari, Sho Kuwahara, Amane Kano, Sze-Ning Chong"   Wide-band VLBI observations of multiple SiO maser lines using the OCTAVE system   International conference

Asia-Pacific Radio Science Conference 2016 

"Hiroshi Imai, Tomoaki Oyama, Yusuke Kono, Tomoya Hirota, Takumi Nagayama, Syunsaki Suzuki, Masahiro Kanaguchi, Takashi Nishikawa, Noriyuki Kawaguchi, Hideyuki, Kobayashi (National Astronomical Observatory of Japan) Miyako Oyadomari, Sho Kuwahara, Amane Kano, Sze-Ning Chong"   Radio Astrometry towards the Nearby Universe with the Square Kilometre Array   Invited International conference

Asia-Pacific Radio Science Conference 2016 

Hiroshi Imai   "VLBI observations of circumstellar maser sources for exploration of stellar pulsation-driven shock waves "   International conference

Blowing in the wind, Rencontres du Vietnam 

Gabor Orosz, Hiroshi Imai, Daniel Tafoya, Jose Francisco Gomez, Olga Suarez, Ricardo Rizzo, Andres Perez Sanchez, Steve Goldman, Ross Burns   Water fountain jets as seen by VLBI maser astrometry   International conference

SCHOCKS2016 Conference 

Gabor Orosz, Hiroshi Imai, Daniel Tafoya, Jose Francisco Gomez, Olga Suarez, Ricardo Rizzo, Andres Perez Sanchez, Steve Goldman, Ross Burns   Water fountain jets as seen by VLBI maser astrometry   International conference

Blowing in the wind, Rencontres du Vietnam 

Hiroshi Imai, SKA-JP Astrometry Science Working Group   Planning VLBI in the SKA era   Invited International conference

Astronomy Development in Vietnam, Challenges and Opportunities 

Hiroshi Imai, SKA-JP Astrometry Science Working Group   Science drivers for low frequency astrometry   International conference

Joint Australian and Japanese SKA Astrometry Schools  

Gabor Orosz, Hiroshi Imai, Richard Dodson, Maria Rioja, Dieter Engeles, Sandra Etoka, Sandor Frey   Multi-calibrator methods for astrometric VLBI   International conference

Joint Australian and Japanese SKA Astrometry Schools  

今井 裕、Joanne Dawson、Andrew Walsh、SPLASHチーム   SPLASH によるOHメーザー源探査の初期成果  

日本天文学会秋季年会  日本天文学会秋季年会

Se-Hyung Cho, Hiroshi Imai, KaVA Evolved Stars sub-Working Group   Planning Large Programs of Stellar Maser Studies with KaVA   International conference

12th Asia-Pacific Regional IAU Meeting  12th Asia-Pacific Regional IAU Meeting

Hiroshi Imai   OH maser astrometry with the SKA   International conference

Transformational Science with the SKA  Transformational Science with the SKA

Hiroshi Imai, Miyako Oyadomari, Se-Hyung Cho, Young-Joo Yun, Kozue Kusuno, Yoshiharu Asaki, Naoko Matsumoto, KVN+VERA Evolved Stars sub-Working Group   Imaging demonstration of stellar masers with KVN+VERA  

日本天文学会秋季年会  日本天文学会秋季年会

Hiroshi Imai   Towards Maser Source Astrometry with the SKA   International conference

Asian-Pacific Radio Science Conference 2013  Asian-Pacific Radio Science Conference 2013

今井 裕, 中島淳一, 郭 新, Bosco Yung, 出口修至   「宇宙の噴水」に見られるAGB星フローまたは「赤道流」  

日本天文学会春季年会  日本天文学会春季年会

今井 裕   GASKAPに向けたメーザー源同定シミュレーションその１  

日本天文学会春季年会  日本天文学会春季年会

今井　裕   HINOTORI進捗報告  

2021年度VLBI懇談会シンポジウム  2021.12  VLBI懇談会

Hiroshi Imai   Water fountains: bipolar fast stellar jets traced by water vapor maser emission   International conference

International Astronomical Union Symposium 290 - Accretion on all scales  International Astronomical Union Symposium 290 - Accretion on all scales

Hiroshi Imai, VERA collaboration   Astrometry of H_2O masers in post-AGB stars   International conference

International Astronomical Union Symposium 287 - Cosmicl Masers: From OH to H_0  International Astronomical Union Symposium 287 - Cosmicl Masers: From OH to H_0

今井裕、VERA チーム   「宇宙の噴水」天体 IRAS 18286-0959 の年周視差距離と銀河系内運動  

日本天文学会秋季年会  日本天文学会秋季年会

今井裕、荘思寧、中島淳一、Chih-Hao Hsia、出口修至、酒井剛、 Jin-Hua He、Nico Koning   「宇宙の噴水」天体 IRAS 16342-3814 で見つかった極端に低い 12CO/13 CO (J = 3-2) 輝線強度比  

日本天文学会秋季年会  日本天文学会秋季年会

Hiroshi Imai, Daniel Tafoya, and VERA collaboration   Trigonometric parallax measurements of post-AGB stars with VERA   International conference

International Astronomical Union Symposium 283 - Planetary Nebulae: An Eye to the Future  International Astronomical Union Symposium 283 - Planetary Nebulae: An Eye to the Future

Hiroshi Imai   Astrometry from VERA to SKA  

Square Kilometer Array Japan Workshop 2010  Square Kilometer Array Japan Workshop 2010

Hiroshi Imai   Stellar Maser Astrophysics Explored with the East Asian VLBI Network   International conference

8th East Asian Meeting on Astronomy  8th East Asian Meeting on Astronomy

Hiroshi Imai   VLBI Mapping of Multiple Maser Lines with the East Asia VLBI Network   International conference

Asian-Pacific Radio Science Conference 2010  Asian-Pacific Radio Science Conference 2010

Hiroshi Imai, John Dickey, Steven Gibson, Jose Francisco G´omez, Paul Jones, Naomi M. McClure-Griffiths, Jacco van Loon, and Snezana Stannimirovi'c   GASKAP: The Galactic Australian SKA Path?nder Survey   International conference

Asian-Pacific Radio Science Conference 2010  Asian-Pacific Radio Science Conference 2010

Hiroshi Imai, Jun-ichi Nakashima, Shuji DeguchiAkiharu Nakagawa, Takumi NagayamaAya Yamauchi   JVN mapping of multi-transitions of SiO J=1―0 maser emission   International conference

East-Asia VLBI Network Workshop 2010  East-Asia VLBI Network Workshop 2010

今井 裕、 VERA プロジェクトチーム   惑星状星雲 K3-35 に付随する水メーザー源の年周視差計測   International conference

日本天文学会春季年会  日本天文学会春季年会

今井裕、出口修至、中川亜紀治、永山匠、山内 彩   一酸化珪素メーザー v=3 J=1-0 輝線のVLBIによる初撮像  

日本天文学会秋季年会  日本天文学会秋季年会

今井 裕、Jin-Hua He, 中島淳一、出口修至   「宇宙の噴水」天体からのCO J=3-2輝線の検出  

日本天文学会秋季年会  日本天文学会秋季年会

Hiroshi Imai   OH maser envelopes of the "water fountain" sources  

9th European VLBI Network Symposium  9th European VLBI Network Symposium

Hiroshi Imai   Stellar molecular jets traced by maser emission  

Approaching Micro-Arcsecond Resolutino with VSOP-2: Astrophysics and Technology  Approaching Micro-Arcsecond Resolutino with VSOP-2: Astrophysics and Technology

Hiroshi Imai, Raghvendra Sahai, Mark Morris   Distance and kinematics of IRAS 19134+2131 revealed by H2O maser observations   International conference

International Astronomical Union Symposium 248: A Giant Step from Milli- to Micro-arcsecond Astrometry  International Astronomical Union Symposium 248: A Giant Step from Milli- to Micro-arcsecond Astrometry

地球と宇宙の時空計測の地平を拓く超広帯域大気スペクトル計測システムの開発 International coauthorship

Grant number：21H04524  2021.4 - 2025.3

日本学術振興会  科学研究費助成事業  基盤研究(A)(一般)

氏原秀樹 他

Exploration of direct tracking techniques for rapid evolution of interstellar regions

2018.3 - 2018.4

Other Ministries  JSPS Invitation Program for Foreign Researcher 

Hiroshi Imai, Tomoya Hirota, Koichiro Sugiyama, Kenta Fujisawa, Kazuhito Motogi, Toshihiro Handa, Shigehisa Takakuwa, Tomofumi Umemoto

宇宙メーザー放射を用いた高密度分子ガス領域の探求

2016.2 - 2016.4

その他省庁等  日本学術振興会外国人招へい研究者 

HINOTORI (Hybrid Installation Project in Nobeyama, Triple-band Oriented)

2015.10 - 2020.3

Government Agency  Collaboration in Japan 

韓国天文宇宙科学研究院(KASI)受託研究事業費

2015.1 - 2017.12

韓国天文宇宙科学研究院  一般受託研究 

今井　裕、今井 裕

星周縁から惑星状星雲への進化に関する電波波長横断的な研究

2014.11 - 2014.12

その他省庁等  日本学術振興会外国人招へい研究者 

広帯域センチ波望遠鏡によるサーベイ観測で探る銀河系の３次元構造と物質循環

2014.7 - 2016.6

その他省庁等  日本学術振興会二国間共同研究 

高橋慶太郎、今井　裕

宇宙空間超長基線電波干渉計観測による水酸基・水蒸気メーザー源の微細構造の探求

2014.4 - 2015.3

国際共同研究 

銀河系水酸基メーザー源の広域掃天探査及びマゼラン雲軌道推定

2014.4 - 2015.3

国際共同研究 

恒星進化末期における脈動変光及び高速ジェット形成のメカニズムの解明

2014.4 - 2015.3

国際共同研究 

次世代大型電波干渉計（SKA）建設に向けた基盤開発と銀河研究、若手研究者の国際連携構築

2014.4 - 2015.3

大学間連携VLBIによる銀河系の進化と構造の解明

2014.4 - 2015.3

VERA-銀河系精密立体地図の作成

2014.4 - 2015.3

宇宙空間超長基線電波干渉計観測に基づく宇宙メーザー微細構造の探究

2014.2 - 2014.4

その他省庁等  日本学術振興会外国人招へい研究者 

水酸基メーザー天体に対する広域探査と高精度位置計測手法の確立

Grant number：25610043  2013.4 - 2016.3

日本学術振興会  科学研究費補助金  挑戦的萌芽研究

今井　裕、中西裕之、朝木義晴

超広帯域メーザー輝線VLBI観測システムの構築

2013.4 - 2014.3

一般受託研究 

水素原子ガス雲及び水酸基メーザー源の銀河系広域にわたる高感度掃天探査

2012.4 - 2013.3

その他省庁等  日本学術振興会特定国派遣研究者事業 

超広帯域メーザー輝線VLBI観測システムの構築

2011.4 - 2012.3

一般受託研究 

水蒸気メーザー源の観測を通した惑星状星雲の研究

2010.4 - 2012.3

その他省庁等  日本学術振興会外国人特別研究員研究奨励費 

VSOP-2 を用いた高精度メーザー源測量に向けた遠方メーザー源及び位置参照電波源探査

2010.4 - 2011.3

一般受託研究 

老星ジェットの探査と超精密解像観測

2008.4 - 2010.3

科学研究費補助金  基盤研究(C)

今井　裕、出口修至

進化末期の恒星に見られるジェットの発現・成長過程の解明

2006.4 - 2007.3

科学研究費補助金  若手研究(B)

老星ジェットの探査と超精密解像観測

2006.4 - 2007.3

その他省庁等  日本学術振興会科学国際研究集会派遣事業 

メーザー源に見られる超微細構造の研究

1999.4 - 2002.3

日本学術振興会  日本学術振興会特別研究員研究奨励費 

水メーザー源のVLBI観測による大質量星の形成過程・形成形態の研究

1996.4 - 1999.3

日本学術振興会  日本学術振興会特別研究員研究奨励費 

VSOP-2 を用いた高精度メーザー源測量に向けた遠方メーザー源及び位置参照電波源探査

国立天文台  国立天文台客員准教授客員経費 

今井 裕

大学と地域

基礎物理学実験

出前講義

Role(s)： Lecturer

明桜館高校  明桜館高校  2015.8

出前講義

Role(s)： Lecturer

千種高校  千種高校  2013.6

出前講義

Role(s)： Lecturer

鶴丸高校  鶴丸高校  2014.10

出前講義

Role(s)： Lecturer

五ヶ瀬中等教育学校  五ヶ瀬中等教育学校  2011.10

出前講義

Role(s)： Lecturer

唐津東高校  唐津東高校  2011.9

出前講義

Role(s)： Lecturer

鹿児島高校  鹿児島高校  2010.11

出前講義

Role(s)： Lecturer

宮崎県立都城西高校  宮崎県立都城西高校  2010.10

出前講義

Role(s)： Lecturer

錦江湾高校  錦江湾高校  2007.12

出前講義

Role(s)： Lecturer

玉龍高校  鹿児島大学  2006.8

East-Asia Interefometry Winter School

Role(s)： Lecturer

総合研究大学院大学、国立天文台、  国立天文台三鷹キャンパス  2011.2

AIPS講習会

Role(s)： Lecturer

韓国宇宙科学研究所  韓国宇宙科学研究所  2004.4

鹿児島コスモフェスタ2009(皆既日食企画）

鹿児島コスモフェスタ実行委員会（鹿児島市青年会議所ほか）  2009.7

鹿児島コスモフェスタ2008

鹿児島コスモフェスタ実行委員会（鹿児島市青年会議所ほか）  2008.9

鹿児島コスモフェスタ2007

鹿児島コスモフェスタ実行委員会（鹿児島市青年会議所ほか）  2007.9

鹿児島コスモフェスタ2006

鹿児島コスモフェスタ実行委員会（鹿児島市青年会議所ほか）  2006.9

鹿児島コスモフェスタ2005

鹿児島コスモフェスタ実行委員会（鹿児島市青年会議所ほか）  2005.9

鹿児島コスモフェスタ2004

鹿児島コスモフェスタ実行委員会（鹿児島市青年会議所ほか）  2004.10

第26回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  錦江湾公園  2018.7

第24回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  錦江湾公園  2016.7

第23回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  錦江湾公園  2015.7

第22回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  錦江湾公園  2014.7

第21回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  錦江湾公園  2013.7

第19回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  錦江湾公園  2011.7

第18回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  錦江湾公園  2010.7

第17回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学天文同好会・国立天文台  2009.7

第14回七夕まつり～親子で楽しむ夏の夜空～

鹿児島大学理学部・鹿児島市教育委員会・鹿児島大学奇術部・鹿児島大学天文同好会・国立天文台  錦江湾公園  2006.7

八重山高原星物語2019(国立天文台VERA入来観測局特別公開）

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2019.8

八重山高原星物語2018

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2018.8

八重山高原星物語2016

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2015.8

八重山高原星物語2015

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2015.8

八重山高原星物語2014

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2014.8

八重山高原星物語2011

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2011.8

八重山高原星物語2010

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2010.8

八重山高原星物語2009

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2009.8

八重山高原星物語2008

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2008.8

八重山高原星物語2007

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2007.8

八重山高原星物語2006

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2006.8

八重山高原星物語2005

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2005.8

八重山高原星物語2004

国立天文台水沢VERA観測所・鹿児島大学理学部／農学部・薩摩川内市入来支所、ほか  国立天文台VERA入来観測局  2004.8