Collisional excitation rates of H2O with H2 -: II.: Rotational excitation with ortho-H2 at very low temperature and application to cold molecular clouds

被引：39
作者：
Grosjean, A
Dubernet, ML
Ceccarelli, C
机构：
[1] Observ Paris, Sect Meudon, F-92195 Meudon, France
[2] Univ Franche Comte, Observ Besancon, CNRS, UMR 6091,Lab Astrophys, F-25010 Besancon, France
[3] Observ Grenoble, Astrophys Lab, F-38041 Grenoble, France
来源：
ASTRONOMY & ASTROPHYSICS | 2003年 / 408卷 / 03期
关键词：
molecular data; molecular processes; ISM : molecules;
D O I：
10.1051/0004-6361:20030969
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the results of close coupling calculations of pure rotational excitation rate coefficients of H2O by ortho-H-2, performed between 5 K and 20 K. At 20 K there is a good agreement with those results obtained previously by Phillips et al. (1996). Fits of our de-excitation collisional rate coefficients are provided. These new rate coefficients are used in the modelling of cold interstellar clouds to determine the influence of the precision of the rate coefficients on predicted line intensities.
引用
收藏
页码：1197 / 1203
页数：7
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