| Chemical abundances in symbiotic stars | |
Lü, Guoliang1; Zhu, Chunhua1,2; Han ZW(韩占文)3 ; Wang, Zhaojun1,2; Lü, Guoliang (reprint author), Xinjiang Univ, Dept Phys, Urumqi 830046, Peoples R China.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2008-08-20 | |
| 卷号 | 683期号:2页码:990-1005 |
| DOI | 10.1086/589876 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 关键词 | Binaries : Symbiotic Galaxy : Stellar Content Stars : Abundances Stars : Evolution White Dwarfs |
| 摘要 | We have carried out a study of the chemical abundances of H-1, He-4, C-12, C-13, N-14, (15) N, O-16, O-17, Ne-20, and Ne-22 in symbiotic stars (SSs) by means of a population synthesis code. We find that the ratios of the number of O-rich SSs to that of C-rich SSs in our simulations are between 3.4 and 24.1, depending on the third dredge-up efficiency lambda and the terminal velocity of the stellar wind v( 1). The fraction of SSs with extrinsic C-rich cool giants in C-rich cool giants ranges from 2.1% to 22.7%, depending on lambda, the common envelope algorithm, and the mass-loss rate. Compared with the observations, the distributions of the relative abundances of C-12/C-13 vs. [C/H] of the cool giants in SSs suggest that thermohaline mixing in low-mass stars may exist. The distributions of the relative abundances of C/N vs. O/N, Ne/O vs. N/O, and He/H vs. N/O in the symbiotic nebulae indicate that it is quite common for the nebular chemical abundances in SSs to be modified by the ejected materials from the hot components. Helium overabundance in some symbiotic nebulae may be relevant to a helium layer on the surfaces of white dwarf accretors. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000258528100031 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | ASYMPTOTIC GIANT BRANCH ; INTERMEDIATE-MASS STARS ; SYNTHETIC AGB EVOLUTION ; WHITE-DWARF ACCRETORS ; STELLAR EVOLUTION ; SPECTROSCOPIC BINARIES ; POPULATION SYNTHESIS ; PERIOD DISTRIBUTION ; RATIO DISTRIBUTION ; PLANETARY-NEBULAE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/9367 |
| 专题 | 大样本恒星演化研究组 |
| 通讯作者 | Lü, Guoliang (reprint author), Xinjiang Univ, Dept Phys, Urumqi 830046, Peoples R China. |
| 作者单位 | 1.Department of Physics, Xinjiang University, Urumqi, 830046, China 2.School of Science, Xi'an Jiaotong University, Xi'an, 710049, China 3.National Astronomical Observatories Yunnan Observatory, the Chinese Academy of Sciences, P.O. Box 110, Kunming, 650011, China |
| 推荐引用方式 GB/T 7714 | Lü, Guoliang,Zhu, Chunhua,Han ZW,et al. Chemical abundances in symbiotic stars[J]. ASTROPHYSICAL JOURNAL,2008,683(2):990-1005. |
| APA | Lü, Guoliang,Zhu, Chunhua,韩占文,Wang, Zhaojun,&Lü, Guoliang .(2008).Chemical abundances in symbiotic stars.ASTROPHYSICAL JOURNAL,683(2),990-1005. |
| MLA | Lü, Guoliang,et al."Chemical abundances in symbiotic stars".ASTROPHYSICAL JOURNAL 683.2(2008):990-1005. |
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| Chemical Abundances （455KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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