| The helium star donor channel for the progenitors of type Ia supernovae with different metallicities | |
Wang B(王博)1,2,3 ; Han ZW(韩占文)1,2; Wang, B (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 2010-06 | |
| 卷号 | 515 |
| DOI | 10.1051/0004-6361/200913976 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | Binaries: Close Supernovae: General White Dwarfs Stars: Evolution |
| 摘要 | Context. The nature of type Ia supernovae (SNe Ia) is still unclear. Metallicities may have an important effect on their properties. Aims. In this paper, we study the He star donor channel towards SNe Ia comprehensively and systematically at various metallicities. Methods. Employing Eggleton's stellar evolution code with the optically thick wind assumption, we calculated about 10 000 WD + He star systems and obtained SN Ia production regions of the He star donor channel with metallicities Z = 0.03, 0.02, 0.004 and 0.0001. According to a detailed binary population synthesis approach, we also obtained SN Ia birthrates at various metallicities. Results. Our study shows that both the initial mass of the He donor star and the initial orbital period for SNe Ia increase with metallicity, while the minimum initial mass of the carbon-oxygen white dwarfs producing SNe Ia decreases with metallicity. For a constant star-formation galaxy, SN Ia birthrates increase with metallicity. If a single starburst is assumed, SNe Ia occur systemically earlier and the peak value of the birthrate is larger for a high Z, and the He star donor channel with different metallicities can produce the young SNe Ia with delay times similar to 45-220 Myr. |
| 项目资助者 | National Natural Science Foundation of China [10821061] ; National Basic Research Program of China [2007CB815406] ; Chinese Academy of Sciences [KJCX2-YW-T24] |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| 归档日期 | 2010-08-27 |
| WOS记录号 | WOS:000280505000057 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | ACCRETING WHITE-DWARFS ; SINGLE-DEGENERATE CHANNEL ; MASS-RATIO DISTRIBUTION ; SUBDWARF-B-STARS ; LONG DELAY TIMES ; X-RAY SOURCES ; STELLAR EVOLUTION ; SPECTROSCOPIC BINARIES ; SYMBIOTIC CHANNEL ; SHELL SOURCE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4499 |
| 专题 | 大样本恒星演化研究组 中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Wang, B (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China. |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, the Chinese Academy of Sciences, Kunming 650011, PR China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, the Chinese Academy of Sciences, Kunming 650011, PR China 3.Graduate University of the Chinese Academy of Sciences, Beijing 100049, PR China |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Wang B,Han ZW,Wang, B . The helium star donor channel for the progenitors of type Ia supernovae with different metallicities[J]. ASTRONOMY & ASTROPHYSICS,2010,515. |
| APA | Wang B,Han ZW,&Wang, B .(2010).The helium star donor channel for the progenitors of type Ia supernovae with different metallicities.ASTRONOMY & ASTROPHYSICS,515. |
| MLA | Wang B,et al."The helium star donor channel for the progenitors of type Ia supernovae with different metallicities".ASTRONOMY & ASTROPHYSICS 515(2010). |
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| The helium star dono（233KB） | 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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