亚恒星

亚恒星天体,也被称为亚恒星,是一类质量小于恒星的质量下限的天体。恆星質量下限約0.08M☉(約80倍木星質量),天体的质量只有达到该质量下限,才能够维持天体内的氢聚变。该类天体包括:棕矮星和行星質量體——尽管这两类天体的形成机制有所不同,其四周是否存在主星的情况也不同。

Uses material from the Wikipedia article "亚恒星", which is released under the Creative Commons BY-SA 3.0.
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