ON RUNAWAY GROWTH OF PLANETESIMALS
ON RUNAWAY GROWTH OF PLANETESIMALS
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DOI：
10.1006/icar.1996.0148
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发表时间：
1996-09
期刊：
影响因子：
3.2
通讯作者：
E. Kokubo;S. Ida
中科院分区：
文献类型：
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作者：
E. Kokubo;S. Ida
我们提出了行星吸积的三维N体模拟的结果。我们证实，失控增长是一个主导模式的行星吸积在三维系统中的微行星轨道有倾角。在失控增长中，较大的星子比较小的星子增长得更快，它们之间的质量比单调增加。另一方面，在所有轨道共面的二维系统中，我们发现，失控增长不会发生。这些结果可以用简单的分析论证来解释。
We present the results of three-dimensional N-body simulations of planetary accretion. We confirm that runaway growth is a dominant mode of planetary accretion in a three-dimensional system where orbits of planetesimals have inclinations. In runaway growth, larger planetesimals grow more rapidly than smaller ones and the mass ratio between them increases monotonically. On the other hand, in a two-dimensional system where all orbits are coplanar, we find that runaway growth does not occur. These results are explained by the simple analytical argument.