Brown Dwarf Formation: Theory
Brown Dwarf Formation: Theory
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褐矮星的形成：理论
DOI：
10.1007/978-3-319-30648-3_95-1
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
A. Whitworth
中科院分区：
文献类型：
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作者：
A. Whitworth
我们排练了定义棕矮星性质的物理和理论考虑，特别是棕矮星的最大质量（由氢燃烧极限设定）和棕矮星的最小质量（由不透明度极限设定）。然后，我们回顾了一系列的机制，已被调用来解释褐矮星的形成和它们的统计特性。这些包括湍流碎裂，丝状体和盘的碎裂，恒星胚胎的动力学抛射，以及光蚀。主要的竞争者似乎是湍流碎裂和盘碎裂，评估它们的相对重要性所需的观测可能很快就可以得到。
We rehearse the physical and theoretical considerations that define the nature of Brown Dwarfs, in particular the maximum mass for a Brown Dwarf (set by the Hydrogen-Burning Limit) and the minimum mass for a Brown Dwarf (set by the Opacity Limit). We then review the range of mechanisms that have been invoked to explain the formation of Brown Dwarfs and their statistical properties. These include turbulent fragmentation, fragmentation of filaments and discs, dynamical ejection of stellar embryos, and photoerosion. The primary contenders would seem to be turbulent fragmentation and disc fragmentation, and the observations needed to evaluate their relative importance may soon be available.