Modeling of collisional growth from dust to planets
Project/Area Number |
17K05632
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Solid earth and planetary physics
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Research Institution | Nagoya University |
Principal Investigator |
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Project Period (FY) |
2017-04-01 – 2021-03-31
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Project Status |
Completed (Fiscal Year 2020)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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Keywords | 惑星形成 / 原始惑星系円盤 / 固体微粒子 / 微惑星 / 原始惑星 / 巨大ガス惑星 / ダスト / デブリ円盤 / 衝突 / 惑星起源・進化 / 固体地球物理学 / 理論天文学 |
Outline of Final Research Achievements |
Planets are formed from submicron-sized dust grains in a protoplanetary disk. In previous studies, the collisional evolution in a limited mass range, such as only among dust grains or among planetesimals. However, the importance of the wide mass range interaction such as protoplanets and pebbles is argued. Therefore, we develop a simulation code to treat the collisional evolution from dust grains to planet, whose mass range is more than 40 orders of magnitude. As the result of the simulation, we show cores of gas giant planets are formed in several hundred thousand years.
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Academic Significance and Societal Importance of the Research Achievements |
本研究により、惑星形成過程を包括的に解釈するシミュレーションができるようになった。つまり、惑星形成の初期条件である原始惑星系円盤と太陽系や系外惑星系などの完成した惑星系との関係性の議論が可能になった。本研究で示唆される固体微粒子の合体成長により原始惑星系円盤に作られるリング状の構造から、原始惑星系円盤の中に見られる惑星形成の兆しを示す研究にも発展させた。
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Report
(5 results)
Research Products
(55 results)
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[Journal Article] Ring Formation by Coagulation of Dust Aggregates in the Early Phase of Disk Evolution around a Protostar2021
Author(s)
Ohashi, S., Kobayashi, H., Nakatani, R., Okuzumi, S., Tanaka, H., Murakawa, K., Zhang, Y., Liu, H. B., & Sakai, N.
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Journal Title
The Astrophysical Journal
Volume: 907
Issue: 2
Pages: 80-80
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution2020
Author(s)
Morota, T., Sugita, S., Cho, Y., Kanamaru, M., Tatsumi, E., Sakatani, N., Honda, R., Hirata, N. et al.
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Journal Title
Science
Volume: 368
Issue: 6491
Pages: 654-659
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Is water ice an efficient facilitator for dust coagulation?2020
Author(s)
Kimura Hiroshi、Wada Koji、Kobayashi Hiroshi、Senshu Hiroki、Hirai Takayuki、Yoshida Fumi、Kobayashi Masanori、Hong Peng K、Arai Tomoko、Ishibashi Ko、Yamada Manabu
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Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 498
Issue: 2
Pages: 1801-1813
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Impact erosion model for gravity-dominated planetesimals2017
Author(s)
Genda, H., Fujita, T., Kobayashi, H., Tanaka, H., Suetsugu, R., and Abe, Y.
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Journal Title
Icarus
Volume: 印刷中
Pages: 234-246
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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