A Study of Interstellar Large Organic Molecules Explored with Near-infrared High-resolution Spectroscopy
| Project/Area Number |
16K17669
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan (2018-2019)
Kyoto Sangyo University (2016-2017) |
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Principal Investigator |
Hamano Satoshi 国立天文台, TMTプロジェクト, 特任研究員 (70756270)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 星間有機分子 / 赤外線高分散分光 / フラーレン / 星間物質 / 星間巨大有機分子 / 近赤外線 / 高分散分光 / 量子化学 |
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| Outline of Final Research Achievements |
In order to identify of the carrier molecules of diffuse interstellar bands (DIBs), which are expected to be an important tool to investigate the interstellar organic molecules, I conducted a observational study of DIBs in the near-infrared (NIR) wavelength range, in which the DIBs have not been fully investigated. First, I developed a data reduction pipeline software for the NIR high-resolution spectrograph WINERED, which was mainly used in this study. I collected the near-infrared spectra of a lot of targets, and investigated the environmental dependence of NIR DIBs and its intrinsic profiles. As a result, I succeeded to reveal the properties of the carriers of NIR DIBs. In addition, I also succeeded to detect the NIR absorption bands originated from interstellar C2 and CN molecules for the first time.
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| Academic Significance and Societal Importance of the Research Achievements |
宇宙における生命の発生過程や惑星系の素となるダストの性質を調べる上で、星間ガス雲中における複雑な有機分子の反応過程や分布は重要である。本研究では、フラーレンやPAHといった巨大な有機分子を調べる道具として期待されているDIBの分子同定に向けて重要な手がかりをいくつか得ることに成功した。本研究を足がかりとしてDIBの同定が成功すれば宇宙における有機分子を探る新たなツールを手に入れることとなり、宇宙化学、宇宙生物学の大きな進展が期待される。
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Report
(5 results)
Research Products
(18 results)
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[Journal Article] A Survey of Near-infrared Diffuse Interstellar Bands2018
Author(s)
Hamano Satoshi, Kobayashi Naoto, Kawakita Hideyo, Ikeda Yuji, Kondo Sohei, Sameshima Hiroaki, Arai Akira, Matsunaga Noriyuki, Yasui Chikako, Mizumoto Misaki, Fukue Kei, Izumi Natsuko, Otsubo Shogo, Takenaka Keiichi
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Journal Title
Bulletin de la Society Royale des Sciences de Liege, in Proceedings of the First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop
Volume: 87
Pages: 276-280
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Near Infrared Diffuse Interstellar Bands Toward the Cygnus OB2 Association2016
Author(s)
Hamano, S., Kobayashi, N., Kondo, S., Sameshima, H., Nakanishi, K., Ikeda, Y., Yasui, C., Mizumoto, M., Matsunaga, N., Fukue, K., Yamamoto, R., Izumi, N., Mito, H., Nakaoka, T., Kawanishi, T., Kitano, A., Otsubo, S., Kinoshita, M., and Kawakita, H.
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Journal Title
The Astrophysical Journal
Volume: 821
Issue: 1
Pages: 42-53
DOI
Related Report
Peer Reviewed
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[Presentation] 近赤外線高分散分光器WINERED: データ解析パイプラインの開発2019
Author(s)
濱野哲史, 近藤荘平, 鮫島寛明, 福江慧, 新井彰, 河北秀世, 大坪翔悟, 竹中慶一, 渡瀬彩華, 池田優二, 小林尚人, 松永典之, 安井千香子
Organizer
日本天文学会2019年春季年会
Related Report
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[Presentation] 近赤外線高分散分光器WINERED: C2, CN 分子バンドの検出2017
Author(s)
濱野哲史, 河北秀世, 竹中慶一, 池田優二, 近藤荘平, 鮫島寛明, 福江慧, 新井彰, 大坪翔悟, 渡瀬彩華, 小林尚人, 松永典之, 安井千香子
Organizer
日本天文学会2017年度秋季年会
Related Report
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