Distributions of neutron exposures in AGB stars and the galaxy

	Distributions of neutron exposures in AGB stars and the galaxy
	Cui, Wen-Yuan ; Zhang, Feng-Hua ; Zhang, Wei-Juan ; Zhang, Lu ; Zhang, Bo
刊名	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2007
卷号	7 期号:2 页码:224-234
关键词	Galaxy : Evolution Stars : Agb And post-Agb Stars : Abundances
英文摘要	Based on the s-process nucleosynthesis model with the C-13 (alpha, n) O-16 reaction occurring under radiative conditions in the interpulse phases, we investigate the characteristics of the distribution of neutron exposure in low-mass Asymptotic Giant Branch (AGB) stars. We introduce a new concept, the distribution of neutron exposures of the Galaxy (NEG), to study the chemical evolution characteristics of the Galaxy for s-process elements. Using a chemical evolution model of the Galaxy, we,develop a model for the NEG and obtain the evolution results of the NEG in different epochs. The present results appear to reasonably reproduce the distribution of neutron exposures of the solar system (hereafter NES). The main component and the strong component in the NES are built up in different epochs. The strong component of the s-process is mainly synthesised in the low-mass and metal-poor AGB stars, and the main component is produced by the s-process in the low-mass AGB stars with higher metallicities.
语种	英语
WOS记录号	WOS:000246129300006
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8909]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China 4.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Cui, Wen-Yuan,Zhang, Feng-Hua,Zhang, Wei-Juan,et al. Distributions of neutron exposures in AGB stars and the galaxy[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(2):224-234.
APA	Cui, Wen-Yuan,Zhang, Feng-Hua,Zhang, Wei-Juan,Zhang, Lu,&Zhang, Bo.(2007).Distributions of neutron exposures in AGB stars and the galaxy.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(2),224-234.
MLA	Cui, Wen-Yuan,et al."Distributions of neutron exposures in AGB stars and the galaxy".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.2(2007):224-234.