406 原始月円盤の進化に対する乱流の影響(セッション4)
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概要
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According to the giant impact hypothesis, the Moon is formed outside the Roche radius of the Earth by the accretion of the material transported from the inner part of the impact-generated disk through gravitational instability. There are two modes of gravitational instability; one is the instability of the dust-gas mixture caused by cooling of the disk, the other is the instability of the equatorial dust layer formed by the sedimentation of dust particles. If there is some turbulence in the disk, the following effects are expected: prevention of dust sedimentation through stirring up of dust particles, enhancement of dust growth through enhanced relative motion, and cooling of dust through convective heat transport. Here, we examine the preferred mode of instability and the effect of the turbulence on the Moon forming process.
- 日本惑星科学会の論文
- 2001-10-06