Chemistry of Carbon Rich Star IRAS 15194–5115

Journal of astrophysics and astronomy

A. Ali1¹ 

[1] King Abdulaziz University, Faculty of Science, Astronomy Department, P.O. Box 80 203, Jeddah 21589, Saudi Arabia.$$

关键词: Molecular data;    molecular processes;    stars: AGB;    stars: individual: IRAS 15194–5115.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

We have constructed two gas-phase models to study the chemistry of circumstellar envelope surrounding the carbon-rich variable star IRAS 15194–5115. The network used consists of 3893 reactions involving 397 gas-phase species. The derived fractional abundances for many molecules are in excellent agreement with values obtained from observations. The predicted column densities from the two models go well with the observed values of carbon star IRC + 10216. The dominant formation routes for three groups of species are discussed through the inner and outer envelopes.

【 授权许可】

Unknown