Exploring Disk Formation and Chemical Diversity There by Survey Observation
| Project/Area Number |
16H03964
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Astronomy
|
|---|
| Research Institution | Institute of Physical and Chemical Research |
|---|
Principal Investigator |
Sakai Nami 国立研究開発法人理化学研究所, 開拓研究本部, 主任研究員 (70533553)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
山本 智 東京大学, 大学院理学系研究科(理学部), 教授 (80182624)
|
|---|
| Research Collaborator |
Higuchi Aya E.
Imai Muneaki
Yichen Zhang
Oya Yoko
Soma Tatsuya
Yoshida Kento
Lopez-Sepulcre Ana
Ceccarelli Cecilia
Francesco Fontani
Codella Claudio
|
|---|
| Project Period (FY) |
2016-04-01 – 2019-03-31
|
| Project Status |
Completed (Fiscal Year 2018)
|
| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
|
|---|
| Keywords | 星間化学 / 星形成 / 惑星系形成 / 化学組成 / 有機分子 / 電波観測 / 分子 / 電波天文学 / 原始惑星系円盤 / 星間物質 / 原始星 |
|---|
| Outline of Final Research Achievements |
We have succeeded statistical study of chemical diversity among various protostellar envelopes located in the same region, Perseus molecular cloud complex. Diversity and its possible origins are shown especially for saturated and unsaturated organic species. We have also revealed that deuterium fractionation ratio reflect protostellar evolutionary stage rather than the chemical diversity. These statistical studies are also carried out by ALMA with the resolution of about 100 au, which enabled us to know chemical diversity in disk forming regions.
|
| Academic Significance and Societal Importance of the Research Achievements |
これまで、同じような進化段階にある原始星の周囲のガスの化学組成は、特殊な場合を除き同様であるべきと考えられてきた。しかし、たとえ母体となる分子雲が同じでも、化学組成の多様性が存在し得ることが示された。これは、私たちの太陽系の化学的起源と宇宙の中での存在価値を知るうえで極めて重要な成果である。物理的には同じような惑星系でも、その形成初期の化学組成が惑星系によって大きく異なる可能性を明瞭に示したからである。一方、多様性の軸は１つではなく様々である可能性も明らかとなった。今後、具体的にどのような多様性が存在し得るのか、あるいはそれらがどのように惑星系に残されていくのかを調べることの重要性が示された。
|
Report
(4 results)
Research Products
(43 results)
-
-
-
-
-
-
-
-
-
-
-
-
[Journal Article] Rotation in the NGC 1333 IRAS 4C Outflow2018
Author(s)
Zhang Yichen、Higuchi Aya E.、Sakai Nami、Oya Yoko、Lopez-Sepulcre Ana、Imai Muneaki、Sakai Takeshi、Watanabe Yoshimasa、Ceccarelli Cecilia、Lefloch Bertrand、Yamamoto Satoshi
-
Journal Title
The Astrophysical Journal
Volume: 864
Issue: 1
Pages: 76-76
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
-
-
-
[Journal Article] Astrochemical evolution along star formation: overview of the IRAM Large Program ASAI2018
Author(s)
Lefloch Bertrand、Bachiller R、Ceccarelli C、Cernicharo J、Codella C、Fuente A、Kahane C、Lopez-Sepulcre A、Tafalla M、Vastel C、Caux E、Gonzalez-Garcia M、Bianchi E、Gomez-Ruiz A、Holdship J、Mendoza E、Ospina-Zamudio J、Podio L、Quenard D、Roueff E、Sakai N、Viti S、Yamamoto S、Yoshida K、et al.
-
Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 477
Issue: 4
Pages: 4792-4809
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
-
-
-
[Journal Article] Chemical Survey toward Young Stellar Objects in the Perseus Molecular Cloud Complex2018
Author(s)
Aya E. Higuchi, Nami Sakai, Yoshimasa Watanabe, Ana Lopez-Sepulcre, Kento Yoshida, Yoko Oya, Muneaki Imai, Yichen Zhang, Cecilia Ceccarelli, Bertrand Lefloch, Claudio Codella, Rafael Bachiller, Tomoya Hirota, Takeshi Sakai, and Satoshi Yamamoto
-
Journal Title
The Astrophysical Journal Supplement Series
Volume: 印刷中
NAID
Related Report
Peer Reviewed / Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
