Corrections to virial estimates of molecular cloud masses
Corrections to virial estimates of molecular cloud masses
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DOI：
10.1086/166791
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发表时间：
1988-10
期刊：
影响因子：
--
通讯作者：
I. MacLaren;K. M. Richardson;A. Wolfendale
中科院分区：
文献类型：
--
作者：
I. MacLaren;K. M. Richardson;A. Wolfendale
重新考虑了维里定理在确定巨分子云质量中的应用。本文认为，对于（C-13）O而不是（C-12）O的光学细线，有必要将结果转换为等效速度宽度。结果导致H2质量的大幅降低，X值更接近Bhat等人（1986）的伽马射线分析结果。内星系中H2的总质量明显小于氢原子的质量。27篇参考文献。
The application of the virial theorem to the determination of giant molecular cloud masses is reconsidered. It is argued that it is necessary to transform the results to equivalent velocity widths for the optically thin line of (C-13)O rather than that of (C-12)O. The results lead to a substantial lowering of H2 mass and values of X closer to that of the gamma-ray analysis of Bhat et al. (1986). The total mass of H2 in the Inner Galaxy is significantly less than that of atomic hydrogen. 27 references.