Formation and destruction of silicon monoxide in SN 1987A

被引：29

作者：

Liu, WH

Dalgarno, A

机构：

[1] Harvard-Smithsonian Center for Astrophysics, Cambridge

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 471卷 / 01期

关键词：

molecular processes; supernovae; individual; (SN; 1987A);

D O I：

10.1086/177982

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new chemistry model for the silicon monoxide molecules in SN 1987A. It incorporates an enhanced rate of formation by radiative association and an enhanced rate of destruction through charge transfer between SiO and Ar+ and Ne+, which is more efficient than the energetic electron impact ionization and dissociation in a previous model. The conclusion is unchanged that the 10(-4) - 10(-3) M(Theta) of SiO observed in SN 1987A can be produced by chemistry models in which there is no microscopic mixing of helium into the silicon-oxygen region of the ejecta.

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收藏

页码：480 / 484

页数：5

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