The formation of molecular clouds

The formation of molecular clouds
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DOI:
10.1046/j.1365-8711.2001.04777.x
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发表时间:
2001-06
影响因子:
4.8
通讯作者:
J. Pringle;R. Allen;S. Lubow
J. Pringle;R. Allen;S. Lubow
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
J. Pringle;R. Allen;S. Lubow

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在最近的一篇论文中,埃尔默格林从观测的角度提出了一个令人信服的例子,即分子云的寿命与它们的动力学时间尺度相当。如果是这样的话,这对分子云形成的机制有重要的影响。特别是,我们考虑的假设,分子云可能不是由原子气体的原位冷却,而是由星际介质,其中大部分,如果不是大多数,已经在分子形式的致密相的凝聚形成。
In a recent paper, Elmegreen has made a cogent case, from an observational point of view, that the lifetimes of molecular clouds are comparable to their dynamical time-scales. If so, this has important implications for the mechanisms by which molecular clouds form. In particular, we consider the hypothesis that molecular clouds may form not by in situ cooling of atomic gas, but rather by the agglomeration of the dense phase of the interstellar medium, much, if not most, of which is already in molecular form.