| Helium-star evolutionary channel to super-Chandrasekhar mass type Ia supernovae | |
Liu, WM1; Chen, WC1,2,3; Wang B(王博)4 ; Han ZW(韩占文)4,5; Chen, WC (reprint author), Shangqiu Normal Univ, Dept Phys, Shangqiu 476000, Peoples R China.
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 2010-11 | |
| 卷号 | 523 |
| DOI | 10.1051/0004-6361/201014180 |
| 产权排序 | 第4完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | Binaries: General Stars: Rotation Stars: Evolution Supernovae: General White Dwarfs |
| 摘要 | The recent discovery of several overluminous type Ia supernovae (SNe Ia) indicates that the explosive masses of white dwarfs may significantly exceed the canonical Chandrasekhar-mass limit. Rapid differential rotation may support these massive white dwarfs (WDs). Based on the single-degenerate scenario and assuming that the WDs would differentially rotate when the accretion rate. (M) over dot > 3 x 10(-7) M-circle dot yr(-1), we performed the numerical calculations for similar to 1000 binary systems consisting of a He star and a CO WD with Eggleton's stellar evolution code. We present the initial parameters in the orbital period - helium star-mass plane (for WD masses of 1.0 M-circle dot and 1.2 M-circle dot, respectively), which lead to super-Chandrasekhar mass SNe Ia. Our results indicate that for an initially massive WD of 1.2 M-circle dot, a large number of SNe Ia may result from super-Chandrasekhar mass WDs. The highest mass of the WD at the moment of the SNe Ia explosion is 1.81 M-circle dot, but very massive (>1.85 M-circle dot) WDs cannot be formed. However, when the initial mass of WDs is 1.0 M-circle dot, the explosive masses of SNe Ia are nearly uniform, which is consistent with the rareness of super-Chandrasekhar mass SNe Ia in observations. |
| 项目资助者 | Natural Science Foundation of China (NSFC) [10873011, 10821061] ; China Postdoctoral Science Foundation ; Program for Science & Technology Innovation Talents in Universities of Henan Province, China ; Chinese Academy of Sciences [KJCX2-YW-T24] ; 973 project [2007CB815406] |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| WOS记录号 | WOS:000285346600007 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | X-RAY SOURCES ; ACCRETING WHITE-DWARFS ; SINGLE-DEGENERATE CHANNEL ; LONG DELAY TIMES ; DIFFERENT METALLICITIES ; STELLAR EVOLUTION ; SYMBIOTIC CHANNEL ; EXPLOSION MODELS ; BINARY-SYSTEMS ; DONOR CHANNEL |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4481 |
| 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 | Chen, WC (reprint author), Shangqiu Normal Univ, Dept Phys, Shangqiu 476000, Peoples R China. |
| 作者单位 | 1.Department of PhysicsShangqiu Normal University, Shangqiu 476000, PR China 2.School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, PR China 3.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, PR China 4.National Astronomical Observatories/Yunnan Observatory, the Chinese Academy of Sciences, Kunming 650011, PR China 5.Key Laboratory for the Structure and Evolution of Celestial Objects, the Chinese Academy of Sciences, Kunming 650011, PR China |
| 推荐引用方式 GB/T 7714 | Liu, WM,Chen, WC,Wang B,et al. Helium-star evolutionary channel to super-Chandrasekhar mass type Ia supernovae[J]. ASTRONOMY & ASTROPHYSICS,2010,523. |
| APA | Liu, WM,Chen, WC,Wang B,Han ZW,&Chen, WC .(2010).Helium-star evolutionary channel to super-Chandrasekhar mass type Ia supernovae.ASTRONOMY & ASTROPHYSICS,523. |
| MLA | Liu, WM,et al."Helium-star evolutionary channel to super-Chandrasekhar mass type Ia supernovae".ASTRONOMY & ASTROPHYSICS 523(2010). |
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| Helium-star evolutio（282KB） | 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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