Investigating high-mass star formation through chemical compositions of infrared dark clouds
| Project/Area Number |
21740144
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Astronomy
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| Research Institution | The University of Tokyo |
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Principal Investigator |
SAKAI Takeshi The University of Tokyo, 大学院・理学系研究科, 特任助教 (20469604)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 電波天文学 / 星間物質 / 星間分子 / 赤外暗黒雲 / 大質量星形成 / SIS受信機 / ミリ波 / 分子雲 / サブミリ波 / Infrared dark cloud / 星形成 / 可視撮像 |
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| Research Abstract |
We have investigated the high-mass star formation on the basis of the chemical compositions of infrared dark clouds (IRDCs), which are thought to be in early evolutionary stages of high-mass star formation. For this purpose, we have carried out a survey of molecular lines toward massive clumps associated with infrared dark clouds (IRDCs) by using the Nobeyama Radio Observatory 45 m telescope and the ASTE 10 m telescope. We have found that the SiO and CH_3OH abundances relative to H^<13>CO^+ are enhanced in several IRDC clumps. Since SiO and CH_3OH are known as "shock tracers", this results means that an interaction between outflows and dense gas frequently occurs in early evolutionary stages of high-mass star formation. The data obtained are useful for future high-resolution observations.
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Report
(3 results)
Research Products
(14 results)
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[Presentation] DNC/HNC Ratio in High-Mass Star Forming Regions : Probing the Initial Condition of High-mass Star Formation2010
Author(s)
Sakai, T., Sakai, N., Furuya, K., Aikawa, Y., Hirota, T., Yamamoto, S.
Organizer
Submillimeter and THz Astrochemistry
Place of Presentation
Tokyo, Japan
Related Report
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[Presentation] DNC/HNC Ratio in High-Mass Star Forming Regions2009
Author(s)
Sakai, T., Sakai, N., Hirota, T., Shiba, S., Yamamoto, S.
Organizer
Millimeter and Submillimeter Astronomy at High Angular Resolution
Place of Presentation
Taipei, Taiwan
Related Report
