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arXiv 0907.1939astro-ph.EP
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小行星卫星是如何旋转的?

How do the small planetary satellites rotate?

Alexander V. Melnikov, Ivan I. Shevchenko

摘要:

本文从小行星卫星自转的动力学稳定性出发,研究了小行星卫星的典型自转状态问题。我们发现,大多数发现的卫星与未知的旋转周期不能同步旋转,因为没有稳定的同步1:1自旋轨道状态存在。它们要么旋转得比同步快得多(那些潮汐未进化的),要么,更不可能的是,混乱(潮汐进化的物体或捕获的慢旋转体)。

英文摘要:

We investigate the problem of the typical rotation states of the small planetary satellites from the viewpoint of the dynamical stability of their rotation. We show that the majority of the discovered satellites with unknown rotation periods cannot rotate synchronously, because no stable synchronous 1:1 spin-orbit state exists for them. They rotate either much faster than synchronously (those tidally unevolved) or, what is much less probable, chaotically (tidally evolved objects or captured slow rotators).

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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