Exploration of synthesis and outward acceleration of circumstellar matter through simultaneous multiple-band high-resolution radio imaging
Project/Area Number |
16H02167
|
Research Category |
Grant-in-Aid for Scientific Research (A)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Astronomy
|
Research Institution | Kagoshima University |
Principal Investigator |
IMAI Hiroshi 鹿児島大学, 総合科学域総合教育学系, 准教授 (70374155)
|
Co-Investigator(Kenkyū-buntansha) |
朝木 義晴 国立天文台, チリ観測所, 准教授 (00332148)
河野 裕介 国立天文台, 水沢VLBI観測所, 助教 (00370106)
小川 英夫 大阪府立大学, 理学(系)研究科(研究院), 客員教授 (20022717)
新永 浩子 鹿児島大学, 理工学域理学系, 准教授 (20709589)
|
Project Period (FY) |
2016-04-01 – 2020-03-31
|
Project Status |
Completed (Fiscal Year 2019)
|
Budget Amount *help |
¥46,670,000 (Direct Cost: ¥35,900,000、Indirect Cost: ¥10,770,000)
Fiscal Year 2019: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2016: ¥26,650,000 (Direct Cost: ¥20,500,000、Indirect Cost: ¥6,150,000)
|
Keywords | 超長基線電波干渉法(VLBI) / 複数波長帯電波同時観測 / 多孔式周波数分離板 / 宇宙メーザー / 長周期脈動変光星 / 宇宙物理 / 恒星進化 / 超長基線電波干渉法 / 複数波長帯同時観測 / 波長帯電波同時観測 |
Outline of Final Research Achievements |
Our project succeeded in developing the triple-radio-band receiving system in the Nobeyama 45 m telescope. There we confirmed that the perforated frequency-band-separation filter plates we developed have the expected performance in the transparency rate and the pointing offset in the higher frequency bands. Using a part of this system, we succeeded in detecting the ignitions of jets from dying stars and periodic behaviors of circumstellar water and silicon-monoxide masers. Our intensive monitoring observations of circumstellar maser sources using the East Asia VLBI Network also have yielded detections of the different performances in the temporal variations of in the brightness distributions of water and silicon-monoxide masers in the common circumstellar envelope. These imply the possibility that we can reveal the variations in the bulk motions and the physical conditions of the maser gas clumps in the circumstellar envelopes affected by stellar pulsation and shock propagation.
|
Academic Significance and Societal Importance of the Research Achievements |
高感度の大型電波望遠鏡における3周波数帯同時観測システムの構築によって、電波観測の効率が飛躍的に進むだけでなく、異種電波放射間の相対輝度分布の高精度での把握が求められる研究でその進展が見込める。VLBI観測においては、分子輝線が豊富なミリ波帯の電波データに対する高精度較正が実現し、多くの輝線では未知だった精密な空間輝度分布の把握が進む。本課題では、星周メーザー源に対する観測でその実用化を進めた。その中で、物理状態によって制御されるメーザー源の見かけの振る舞いと、メーザー源における真の物質運動とを見分けられる見通しがついた。今後、終末星からの物質放出を定量的に理解することにつながるはずである。
|
Report
(5 results)
Research Products
(97 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Journal Article] Looking for new water-fountain stars2019
Author(s)
Uscanga, L.; Gomez, J. F.; Yung, B. H. K.; Imai, H.; Rizzo, J. R.; Suarez, O.; Miranda, L. F.; Trinidad, M. A.; Anglada, G.; Torrelles, J. M.
-
Journal Title
Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time. Proceedings of the International Astronomical Union
Volume: 343
Pages: 527-528
DOI
Related Report
Int'l Joint Research
-
-
-
-
[Journal Article] Astrometrically registered maps of H2O and SiO masers toward VX Sagittarii2018
Author(s)
Yoon, Dong-Hwan; Cho, Se-Hyung; Yun, Youngjoo; Choi, Yoon Kyung; Dodson, Richard; Rioja, Maria; Kim, Jaeheon; Imai, Hiroshi; Kim, Dongjin; Yang, Haneul; Byun, Do-Young
-
Journal Title
Nature Communications
Volume: 9
Pages: 2534
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
[Journal Article] Rapidly evolving episodic outflow in IRAS 18113-2503: clues to the ejection mechanism of the fastest water fountain2018
Author(s)
Orosz, G., Gomez, 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., Suarez, O., Uscanga, L.,
-
Journal Title
Monthly Notices of the Royal Astronomical Society: Letters
Volume: 482
Pages: L40-L45
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
[Journal Article] Accurate OH Maser Positions. II. The Galactic Center Region2018
Author(s)
Qiao, H.-H., Walsh, A. J., Breen, S. L., Gomez, J. F., Dawson, J. R., Imai, H., Ellingsen, S. P., Ellingsen, S. P., Shen, Z.-Q.,
-
Journal Title
The Astrophysical Journal Supplement Series
Volume: 239
Pages: 15
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
-
-
[Journal Article] Sun-sized Water Vapor Masers in Cepheus A2018
Author(s)
Sobolev, A. M.; Moran, J. M.; Gray, M. D.; Alakoz, A.; Imai, H.; Baan, W. A.; Tolmachev, A. M.; Samodurov, V. A.; Ladeyshchikov, D. A.
-
Journal Title
The Astrophysical Journal
Volume: 856
Pages: 60 (9 pages)
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
-
[Journal Article] A dearth of OH/IR stars in the Small Magellanic Cloud2018
Author(s)
Goldman, Steven R.; van Loon, Jacco Th.; Gomez, Jose, F.; Green, James A.; Zijlstra, Albert A.; Nanni, Ambra; Imai, Hiroshi; Whitelock, Patricia A.; Groenewegen, Martin A. T.; Oliveira, Joana M.
-
Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 473
Pages: 3835-3853
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
-
-
[Journal Article] Phase correction for ALMA. Investigating water vapour radiometer scaling: The long-baseline science verification data case study2017
Author(s)
Maud, L. T.; Tilanus, R. P. J.; van Kempen, T. A.; Hogerheijde, M. R.; Schmalzl, M.; Yoon, I.; Contreras, Y.; Toribio, M. C.; Asaki, Y.; Dent, W. R. F.; Fomalont, E.; Matsushita, S.
-
Journal Title
Astronomy & Astrophysics
Volume: 605
Pages: 121 (26 pages)
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
[Journal Article] A comparative study of amplitude calibrations for the East Asia VLBI Network: A priori and template spectrum methods2017
Author(s)
Cho, Ilje; Jung, Taehyun; Zhao, Guang-Yao; Akiyama, Kazunori; Sawada-Satoh, Satoko; Kino, Motoki; Byun, Do-Young; Sohn, Bong Won; Shibata, Katsunori M.; Hirota, Tomoya; Niinuma, Kotaro; Yonekura, Yoshinori; Fujisawa, Kenta; Oyama, Tomoaki
-
Journal Title
Publications of the Astronomical Society of Japan
Volume: 69
Pages: 87 (26 pages)
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
-
-
-
-
-
[Journal Article] The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicity2017
Author(s)
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., Gomez, J. F.
-
Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 465
Pages: 403-433
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
[Journal Article] Astrometry of OH/IR Stars Using 1612 MHz Hydroxyl Masers. I. Annual Parallaxes of WX Psc and OH138.0+7.22017
Author(s)
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.; Tafoya, D.
-
Journal Title
The Astronomical Journal
Volume: 153
Pages: 119(13 pages)
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
-
-
-
-
-
[Journal Article] First Simultaneous mapping of four 7 mm SiO maser lines using the OCTAVE System2016
Author(s)
Oyama, T., Kono, Y., Suzuki, S., Kanaguchi, M., Nishikawa, T., Kawaguchi, N., Hirota, T., Nagayama, T., Kobayashi, H., Imai, H., Kuwahara, S., Kano, A., Oyadomari, M., Chong, S.-N.
-
Journal Title
Publications of the Astronomical Society of Japan
Volume: 68
Pages: 105(10pages)
DOI
Related Report
Peer Reviewed
-
[Journal Article] Measuring Magnetic Fields from Water Masers Associated with the Synchrotron Protostellar Jet in W3(H2O)2016
Author(s)
Goddi, C., Surcis, G., Moscadelli, L., Imai, H., Vlemmings, W.H.T., van Langevelde, H.J., Sanna, A.
-
Journal Title
Astronomy and Astrophysics
Volume: 597
Pages: A43(16pages)
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
[Journal Article] Spatially Resolved HCN Absorption Features in the Circumnuclear Region of NGC 10522016
Author(s)
Sawada-Satoh, Satoko; Roh, Duk-Gyoo; Oh, Se-Jin; Lee, Sang-Sung; Byun, Do-Young; Kameno, Seiji; Yeom, Jae-Hwan; Jung, Dong-Kyu; Kim, Hyo-Ryoung; Hwang, Ju-Yeon
-
Journal Title
The Astrophysical Journal Letters
Volume: 830
Pages: L3(5pages)
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
[Presentation] 「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2019
Author(s)
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, Jose Francisco Gomez, Daniel Tafoya, Lucero Uscanga
Organizer
日本天文学会2019年秋季年会
Related Report
-
[Presentation] 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2019
Author(s)
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 and NESS Team
Organizer
日本天文学会2019年秋季年会
Related Report
-
-
-
[Presentation] 野辺山45m電波望遠鏡における 22/43 GHz 帯同時観測評価2018
Author(s)
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
Organizer
日本天文学会秋季年会
Related Report
-
-
-
-
-
-
[Presentation] 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-2018
Author(s)
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
Organizer
VLBI懇談会シンポジウム2018
Related Report
-
[Presentation] 野辺山45 m電波望遠鏡搭載同時観測用周波数フィルタの開発(II)2018
Author(s)
岡田 望, 橋本 育実, 保田 大介, 高田 勝太, 本間 愛彩, 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, 岸本 直子, 水窪 耕兵, 澤田-佐藤 聡子, 今井 裕
Organizer
日本天文学会春季年会
Related Report
-
-
-
-
-
-
[Presentation] 野辺山 45 m 鏡搭載 20/40 GHz 帯同時観測用周波数フィルタの開発2017
Author(s)
岡田 望, 橋本 育実, 高田 勝太, 本間 愛彩, 高橋 諒, 木村 公洋, 千葉 正克, 真鍋 武嗣, 小川 英夫, 大西 利和, 南谷 哲宏, 宮本 祐介, 宮澤 和彦, 齋藤 正雄, 岸本 直子, 水窪耕兵, 今井 裕
Organizer
日本天文学会2017年春季年会
Place of Presentation
九州大学(福岡県福岡市)
Year and Date
2017-03-15 – 2017-03-18
Related Report
-
[Presentation] 野辺山 45 m 電波望遠鏡搭載同時観測用周波数フィルタの開発2017
Author(s)
岡田 望, 橋本 育実, 高田 勝太, 本間 愛彩, 木村 公洋, 千葉 正克, 真鍋 武嗣, 小川 英夫, 大西 利和, 南谷 哲宏, 宮本 祐介, 宮澤 和彦, 宮澤 千栄子, 岸本 直子, 水窪 耕兵, 澤田-佐藤 聡子, 今井 裕
Organizer
日本天文学会秋季年会
Related Report
-
[Presentation] 野辺山 45m 電波望遠鏡複周波数バンド同時観測プロジェクト (Hybrid Installa- tion Project in Nobeyama, Triple-band Oriented)2017
Author(s)
澤田-佐藤聡子, 今井裕, 半田利弘, 新永浩子, 水窪耕兵, 小川英夫, 真鍋武嗣, 木村公洋, 岡田望, 橋本育実, 南谷哲宏, 小山友明, 河野裕介, 砂田和良, 田村良明, 坂井伸行, 朝木義晴, 亀野誠二, 新沼浩太郎, 藤澤健太, 米倉覚則
Organizer
日本天文学会秋季年会
Related Report
-
-
-
-
-
[Presentation] Water fountain jets as seen by VLBI maser astrometry2016
Author(s)
Gabor Orosz, Hiroshi Imai, Daniel Tafoya, Jose Francisco Gomez, Olga Suarez, Ricardo Rizzo, Andres Perez Sanchez, Steve Goldman, Ross Burns
Organizer
SCHOCKS2016 Conference
Place of Presentation
トルン(ポーランド)
Year and Date
2016-09-14 – 2016-09-16
Related Report
Int'l Joint Research
-
[Presentation] Wide-band VLBI observations of multiple SiO maser lines using the OCTAVE system2016
Author(s)
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
Organizer
Asia-Pacific Radio Science Conference 2016
Place of Presentation
ソウル(韓国)
Year and Date
2016-08-21 – 2016-08-25
Related Report
Int'l Joint Research / Invited
-
-
[Presentation] Water fountain jets as seen by VLBI maser astrometry2016
Author(s)
Gabor Orosz, Hiroshi Imai, Daniel Tafoya, Jose Francisco Gomez, Olga Suarez, Ricardo Rizzo, Andres Perez Sanchez, Steve Goldman, Ross Burns
Organizer
Blowing in the wind, Rencontres du Vietnam
Place of Presentation
クイニョン(ベトナム)
Year and Date
2016-08-07 – 2016-08-13
Related Report
Int'l Joint Research / Invited
-
-
[Presentation] Planning VLBI in the SKA era2016
Author(s)
Hiroshi Imai, SKA-JP Astrometry Science Working Group
Organizer
Astronomy Development in Vietnam, Challenges and Opportunities
Place of Presentation
クイニョン(ベトナム)
Year and Date
2016-07-31 – 2016-07-31
Related Report
Int'l Joint Research / Invited
-
-
-
-
-
-
-