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arXiv 1204.0976astro-ph.EP
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利用卫星探测太阳系外行星形成

Using Satellites to Probe Extrasolar Planet Formation

Paul Withers, Jason W. Barnes

摘要:

行星卫星是行星系的一个组成部分。在这里,我们对它们的形成做了两个预测。首先,具有一系列显著特征的原始卫星只在巨行星周围形成。如果这是真的,那么一个行星系统的原恒星星云的大小和持续时间,以及它的雪线的位置,可以通过知道它的哪些行星拥有原始卫星而哪些没有来限制。第二,所有围绕类地行星的卫星都是由撞击形成的。如果这是真的,这将极大地加强对类地行星历史的限制,因为它们的卫星的组成,大小和动力学。

英文摘要:

Planetary satellites are an integral part of the heirarchy of planetary systems. Here we make two predictions concerning their formation. First, primordial satellites, which have an array of distinguishing characteristics, form only around giant planets. If true, the size and duration of a planetary system's protostellar nebula, as well as the location of its snow line, can be constrained by knowing which of its planets possess primordial satellites and which do not. Second, all satellites around terrestrial planets form by impacts. If true, this greatly enhances the constraints that can be placed on the history of terrestrial planets by their satellites' compositions, sizes, and dynamics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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