Evolution of the distribution of neutron exposures in the galaxy disc: An analytical model
文献类型：期刊论文
| 作者 | Cui, Wenyuan; Zhang, Weijuan; Zhang, Bo
|
| 刊名 | JOURNAL OF ASTROPHYSICS AND ASTRONOMY
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 28期号:1页码:55-66 |
| 关键词 | nucleosynthesis neutron exposures abundances-stars : AGB stars : low-mass stars galaxy : evolution |
| 英文摘要 | In this work, based on the analytical model with delayed production approximation developed by Pagel & Tautvaisiene (1995) for the Galaxy, the analytic solutions of the distribution of neutron exposures of the Galaxy (hereafter NEG) are obtained. The present results appear to reasonably reproduce the distribution of neutron exposures of the solar system (hereafter NES). The strong component and the main component of the NES are built LIP in different epochs. Firstly, the strong component is produced by the s-process nucleosynthesis in the metal-poor AGB stars, starting from [Fe/H] approximate to-1.16 to [Fe/H] approximate to-0.66,corresponding to the time interval 1.06 < t < 2.6 Gyr. Secondly, the main component is produced by the s-process in the galactic disk AGB stars, starting from [Fe/H] approximate to -0.66 to [Fe/H] approximate to 0, corresponding to the time interval t > 2.6 Gyr. The analytic solutions have the advantage of an understanding of the structure and the properties of the NEG. The NEG is believed to be an effective tool to study the s-process element abundance distributions in the Galaxy at different epochs and the galactic chemical evolution of the neutron-capture elements. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000245602200006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7327]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Wenyuan,Zhang, Weijuan,Zhang, Bo. Evolution of the distribution of neutron exposures in the galaxy disc: An analytical model[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2007,28(1):55-66. |
| APA | Cui, Wenyuan,Zhang, Weijuan,&Zhang, Bo.(2007).Evolution of the distribution of neutron exposures in the galaxy disc: An analytical model.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,28(1),55-66. |
| MLA | Cui, Wenyuan,et al."Evolution of the distribution of neutron exposures in the galaxy disc: An analytical model".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 28.1(2007):55-66. |
入库方式： OAI收割
来源：国家天文台
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