Investigating the abundance enrichment pattern of heavy elements in the only observed CEMP-r/s star J004441.04-732136.4 of the SMC
文献类型：期刊论文
| 作者 | Cui WenYuan1,2; Zhang Bo2 ; Zhao Gang1,3
|
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 57期号:6页码:1201-1205 |
| 关键词 | stellar nucleosynthesis abundances chemically peculiar stars |
| 英文摘要 | The post-AGB star J004441 is the first and the only one CEMP-r/s star found in SMC. Herein, we investigate the observed abundance pattern of the heavy elements using our parametric model. A consistent fitting results was obtained for the sample star. Based on the low r = 0.08, the s-process nucleosynthesis occurred in the interior is supposed to belong to the single neutron-exposure event. The median value of supports a higher efficiency of the s-process nucleosynthesis relative to J004441 than that of the solar system, however, the value is not sufficiently high to favor the formation of a lead star. Thus, J004441 does not belong to lead star group. The large C (s) value of J004441 supports the intrinsic characteristic of the s-enrichment. The C (s) value is similar with that found in halo CEMP-r/s stars, which indicates that the r-process contributions is critical during heavy element enrichment. This star has a metallicity of [Fe/H] = -1.34, which is larger than that of Galaxy halo CEMP-r/s stars. The reason may be because of the different history of metallicity enrichment between the SMC and the Galaxy halo. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000335659600022 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6355]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Peoples R China 2.Hebei Normal Univ, Coll Phys Sci & Informat Engn, Shijiazhuang 050024, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui WenYuan,Zhang Bo,Zhao Gang. Investigating the abundance enrichment pattern of heavy elements in the only observed CEMP-r/s star J004441.04-732136.4 of the SMC[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2014,57(6):1201-1205. |
| APA | Cui WenYuan,Zhang Bo,&Zhao Gang.(2014).Investigating the abundance enrichment pattern of heavy elements in the only observed CEMP-r/s star J004441.04-732136.4 of the SMC.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,57(6),1201-1205. |
| MLA | Cui WenYuan,et al."Investigating the abundance enrichment pattern of heavy elements in the only observed CEMP-r/s star J004441.04-732136.4 of the SMC".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 57.6(2014):1201-1205. |
入库方式： OAI收割
来源：国家天文台
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