2011 Fiscal Year Final Research Report
Modeling the Planetesimal formation Process and Its Comparison to Observations of Vega-like stars
Project/Area Number |
20540232
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Astronomy
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Research Institution | Tokyo Institute of Technology (2010-2011) Hokkaido University (2008-2009) |
Principal Investigator |
TAKEUCHI Taku 東京工業大学, 大学院・理工学研究科, 科学研究費研究員 (40372651)
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Co-Investigator(Kenkyū-buntansha) |
NAKAGAWA Yoshitsugu 神戸大学, 大学院・理学研究科, 教授 (30172282)
AIKAWA Yuri 神戸大学, 大学院・理学研究科, 准教授 (40324909)
TANAKA Hidekazu 北海道大学, 低温科学研究所, 准教授 (00282814)
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Project Period (FY) |
2008 – 2011
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Keywords | 理論天文学 / 惑星形成 / 原始惑星系円盤 / ベガ型星 / 太陽系外惑星系 |
Research Abstract |
We study planetesimal formation processes. The following effects are studied : turbulence induced by the dust layer formed at the midplane of the gas disks, self-gravity of the dust layer, grain charges, and collisional fragmentation. We derived properties of the gas disks required for planetesimal formation. In order to compare the planetesimal formation theory to the observations of Vega-like stars, we study dust disk structure affected by the stellar radiation and the disk gas. We have also performed experimental studies of high velocity collisions of dust particles and derived the size distribution of collisional fragments. Finally, we derived the gas disk properties from the observation of the transitional disk, which is considered to be a former stage of Vega-like disks.
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Research Products
(23 results)
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[Journal Article] Silicate Dust Size Distribution from Hypervelocity Collisions : Implications for Dust Production in Debris Disks2011
Author(s)
Takasawa, S., Nakamura, A. M., Kadono, T., Arakawa, M., Dohi, K., Ohno, S., Seto, Y., Maeda, M., Shigemori, K., Hironaka, Y., Sakaiya, T., Fujioka, S., Sano, T., Otani, K., Watari, T., Sangen, K., Setoh, M., Machii, N., Takeuchi, T.
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Journal Title
The Astrophysical Journal Letters
Volume: 733
Pages: L39(4pp)
Peer Reviewed
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