Molecular hydrogen

被引：53

作者：

Habart, E

Walmsley, M

Verstraete, L

Cazaux, S

Maiolino, R

Cox, P

Boulanger, F

Des Forêts, GP

机构：

[1] Ist Nazl Fis Nucl, Osservatorio Astrofis Arcetri, I-50125 Florence, Italy

[2] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France

来源：

SPACE SCIENCE REVIEWS | 2005年 / 119卷 / 1-4期

基金：

美国国家航空航天局;

关键词：

molecular hydrogen; infrared : spectroscopy; molecular processes; ISM : molecules; ISM : clouds; star formation; circumstellar matter; infrared : galaxies;

D O I：

10.1007/s11214-005-8062-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations of H-2 line emission in galactic and extragalactic environments obtained with the Infrared Space Observatory (ISO) are reviewed. The diagnostic capability of H-2 observations is illustrated. We discuss what one has learned about such diverse astrophysical sources as photon-dominated regions, shocks, young stellar objects, planetary nebulae and starburst galaxies from ISO observations of H-2 emission. In this context, we emphasise use of measured H-2 line intensities to infer important physical quantities such as the gas temperature, gas density and radiation field and we discuss the different possible excitation mechanisms of H-2. We also briefly consider future prospects for observation of H-2 from space and from the ground.

引用

收藏

页码：71 / 91

页数：21

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