| AGB星s-过程核合成相关问题的研究进展 |
| |
| 引用本文： | 张波,崔文元.AGB星s-过程核合成相关问题的研究进展[J].天文学进展,2006,24(1):54-61. |
| |
| 作者姓名： | 张波 崔文元 |
| |
| 作者单位： | 1. 河北师范大学,物理系,石家庄,050016
2. 河北师范大学,物理系,石家庄,050016;中国科学院,国家天文台,北京,100012 |
| |
| 基金项目： | 国家自然科学基金资助项目(10373005) |
| |
| 摘 要： | 综述了近年来AGB星核合成理论的研究情况,述及AGB星的结构与s-过程核合成有关的中子辐照量分布、人们比较关注的铅星与非铅星、后AGB星元素丰度分布及与AGB星核合成有关的s r星。
|
| 关 键 词： | 天体物理学 AGB星 综述 中子俘获 s-过程 铅星 后AGB星 s r星 |
| 文章编号： | 1000-8349（2006）01-0054-08 |
| 收稿时间： | 04 4 2005 12:00AM |
| 修稿时间： | 2005-04-042005-09-15 |
Progress in the Study of the s-Process Nucleosynthesis on the Asymptotic Giant Branch |
| |
| ZHANG Bo,CUI Wen-yuan.Progress in the Study of the s-Process Nucleosynthesis on the Asymptotic Giant Branch[J].Progress In Astronomy,2006,24(1):54-61. |
| |
| Authors: | ZHANG Bo CUI Wen-yuan |
| |
| Institution: | 1. Department of Physics, Hebei Normal University, Shijiazhuang 050016, China; 2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China |
| |
| Abstract: | In this paper a review of the theoretical investigation of nucleosynthesis and evolution of low mass AGB stars is presented. AGB stars are the source for the main component of the s-process. Some details of the s-process in AGB stars seem now to be well understood, and yet others remain a mystery, such as the mechanism responsible for the observed spread of Pb abundance of metal-poor AGB stars. The present status of post-AGB stars is also introduced. Special abundance pattern of the elements, in particular of the neutron-capture elements, is observed in some metal-poor stars recently. It shows a strong enrichment in "r" and "s" process elements. The possible origins of this abundance pattern and especially of the strong enhancement of both "s" and "r" elements are discussed. The new challenge of AGB modeling, namely the study of C-rich and s-rich very metal-poor stars, is also discussed. |
| |
| Keywords: | astrophysics AGB stars review neutron capture: s-process Pb stars Post-AGB stars s r stars |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
