CHEMISTRY IN THE INTERSTELLAR-MEDIUM

被引:57
作者
HERBST, E [1 ]
机构
[1] OHIO STATE UNIV, DEPT ASTRON, COLUMBUS, OH 43210 USA
关键词
MOLECULES IN SPACE; INTERSTELLAR CLOUDS; DUST PARTICLES; ION-MOLECULE REACTIONS; FRACTIONAL ABUNDANCES;
D O I
10.1146/annurev.physchem.46.1.27
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Over the past 25 years, astronomers have discovered a large number of gas-phase molecules in space, ranging in size up to more than 10 atoms. The molecules, which are mainly organic in nature and comprise both normal and abnormal species, are located between stars, in regions known as interstellar clouds, which contain both gaseous material and material in the form of dust particles. The gas is well characterized by high-resolution spetroscopy, whereas the dust is less well characterized by low-resolution infrared spectroscopy and the scattering of visible radiation. The gaseous molecules are synthesized in situ from precursor atomic material, which derives from the mass loss of previous generations of stars. The chemical reactions involved in this synthesis are discussed in some detail as are the models that seek to reproduce the observed abundances of molecules.
引用
收藏
页码:27 / 53
页数:27
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