Silicon monosulphide radiative association

被引：12
作者：
Andreazza, C. M. [1 ]
Marinho, E. P. [1 ]
机构：
[1] Univ Estadual Paulista, IGCE, DEMAC, BR-13500230 Rio Claro, SP, Brazil
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 380卷 / 01期
关键词：
atomic data; atomic processes; circumstellar matter; ISM : molecules;
D O I：
10.1111/j.1365-2966.2007.12081.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Rate coefficients for radiative association of silicon and sulphur atoms to form silicon monosulphide (SiS) molecule are estimated. The radiative association is due mainly to approach in the E-1 Sigma(+) and A(1)Pi states of SiS. For temperatures ranging from similar to 1000 to similar to 14 000 K, the rate coefficients are found to vary from 8.43 x 10(-17) to 2.69 x 10(-16) cm(3) s(-1). Our calculated rate coefficient is higher than the values used in modelling the chemistry of Type Ia supernovae.
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页码：365 / 368
页数：4
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