Observational study of protoplanetary disk dispersal mechanism using metallicity dependence
Project/Area Number |
22840046
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Astronomy
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Research Institution | National Astronomical Observatory of Japan |
Principal Investigator |
YASUI Chikako 国立天文台, ALMA推進室, 研究員 (00583626)
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Project Period (FY) |
2010 – 2011
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Project Status |
Completed (Fiscal Year 2011)
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Budget Amount *help |
¥3,081,000 (Direct Cost: ¥2,370,000、Indirect Cost: ¥711,000)
Fiscal Year 2011: ¥1,469,000 (Direct Cost: ¥1,130,000、Indirect Cost: ¥339,000)
Fiscal Year 2010: ¥1,612,000 (Direct Cost: ¥1,240,000、Indirect Cost: ¥372,000)
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Keywords | 星・惑星形成 / 赤外線天文学 / 電波天文学 / 星惑星形成 |
Research Abstract |
It is essential to clarify the mechanism of protoplanetary disk dispersal for understanding planet formation processes. We observed star-forming regions in higher and lower metallicity environments with Subaru 8.2m telescope and found the metallicity dependence of disk lifetime : the longer lifetime in higher metallicity environments. Our results suggest that photoevaporation by FUV and/or X-ray is one of the most dominant mechanism in disk dispersal process. We also quantitatively estimated disk lifetime of intermediate-mass stars for the first time and found that the lifetime is about half of that for low-mass stars and that the innermost disk disappears in very short timescale while entire disk disappears almost simultaneously for low-mass stars.
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Report
(3 results)
Research Products
(16 results)
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[Journal Article] Fabrication and current optical performance of a large diamond-machined ZnSe immersion grating2010
Author(s)
Ikeda, Y., Kobayashi, N., Kuzmenko, P.J., Little, S.L., Yasui, C., 他
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Journal Title
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
Volume: 7739
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[Presentation] Fabrication and current optical performance of a large diamond-machined ZnSe immersion grating2010
Author(s)
Ikeda, Y., Kobayashi, N., Kuzmenko, P.J., Little, S.L., Yasui, C., 他
Organizer
Society of Photo-Optical Instrumentation Engineers (SPIE)
Place of Presentation
San Diego, CA, United States
Year and Date
2010-07-02
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