| 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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