Ryugaku Jinja · Professor Archive
Public Professor Archive
Akiharu Nakagawa中川 亜紀治
Kagoshima University · Graduate School of Science and Engineering · 助教
- Publications
- 4
- Projects
- 4
- Keywords
- 8
留学
神社Kagoshima University · Graduate School of Science and Engineering · 助教
Research keywordsVLBI astrometry・VERA・AGB stars・maser astrometry・radio telescopes・Galactic center・infrared variability・JASMINE
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- Parallaxes and Proper Motions of Long Period Variable Stars Determined from VLBI and Gaia DR32026
- Honma M., Hirota T., Oyama T., Nakagawa A. . VERA’s 20 yr Evolution in Science and Technology . Galaxies13 ( 6 ) 2025年12月 詳細を見る 記述言語： 日本語 出2025 · 記述言語： 日本語 出版者・発行元： Galaxies We review the past 20 yr evolution of VERA (VLBI Exploration of Radio Astrometry) in both science and techinology. VERA is a VLBI array in Japan which consists of four 20 m-diameter telescopes, originally dedicated to phase-referencing VLBI astrometry. Its main observing bands are K (22 GHz) and Q (43 GHz) for conducting astrometry observations of H<inf>2</inf>O and SiO maser sources. In its 20 yr history, VERA has conducted astrometry observations of ∼100 maser sources, revealing the three-dimensional structure of the Milky Way Galaxy. Its long-term observations of Sgr A* resulted in the first parallax detection of the super-massive black hole at the Galaxy center. Observations of maser sources also revealed physical properties of star-forming regions and provided calibration of AGB stars’ distances and their Period–Luminosity relation. In parallel, several upgrades have been carried out in receivers as well as digital back-ends and correlator to extend the frequency bands and the data rate. DOI： 10.3390/galaxies13060120 Scopus
- Tachibana, Kengoほか2023 · 記述言語： 英語 掲載種別： 研究論文（学術雑誌）
- Akahori, Takuya ; Imai, Hiroshi ; Eie, Sujin ; Oyama, Tomoaki ; Kimura, Kimihiro ; Kurayama, Tomoharu ; Kono, Yusuke ; Kobayashi, Hideyuki ; Sakai, Daisuke ; Sakai, Nobuyuki ; Teraya, Takaaki ; Jike, Takaaki ; Motogi, Kazuhito ; Sugiyama, Koichiro ; Sudo, Hiroshi ; Takefuji, Kazuhiro ; Kino, Motoki ; Doi, Akihiro ; Nagai, Hiroshi ; Nagayama, Takumi 他2021
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