TIME-DEPENDENT FLUORESCENT H-2 EMISSION

被引：45
|
作者：
GOLDSHMIDT, O
STERNBERG, A
机构：
[1] School of Physics and Astronomy, Tel Aviv University
来源：
ASTROPHYSICAL JOURNAL | 1995年 / 439卷 / 01期
关键词：
ISM; MOLECULES; MOLECULAR PROCESSES; PLANETARY NEBULAE; GENERAL; RADIATIVE TRANSFER;
D O I：
10.1086/175168
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present computations of the time-dependent infrared fluorescent emission-line response of molecular hydrogen (H-2) gas in interstellar clouds exposed to far-ultraviolet radiation fields. In clouds exposed to intense fields the H-2 line intensities may be much larger at early times immediately following the onset of irradiation than under conditions of static equilibrium. Time-dependent effects in evolving photon-dominated regions may be important in the fluorescent H-2 emitting regions in planetary and reflection nebulae and possibly in starburst galaxies and active galactic nuclei.
引用
收藏
页码：256 / 263
页数：8
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