| Project/Area Number |
21540441
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
ITO Takashi 国立天文台, 天文データセンター, 助教 (40280565)
|
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Fumi 国立天文台, 国際連携室, 専門研究職員 (20399306)
|
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| Co-Investigator(Renkei-kenkyūsha) |
TAKEDA Takaaki 国立天文台, 天文シミュレーションプロジェクト, 専門研究職員 (70413961)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 固体惑星 / 衛星 / 小惑星 / クレーター / 天体力学 / オールト雲 / 衝突 / シミュレーション |
|---|
| Research Abstract |
Asteroids have been playing a central role in the solar system evolution. Particularly, the near-Earth asteroids(NEAs) that approach the Earth and under active surveillance are the key objects in the collisional history of the solar system. Our study over the past three years indicates that the NEAs could fly into Earth's orbital region from a variety of places in the solar system through complicated dynamical processes, containing many ingredients from rocky asteroids to icy comets. Further accumulation of observational data as well as space mission results are necessary to get clearer pictures of the history of the solar system collisions related to NEAs.
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