| Helium-rich hot subdwarfs and single low-mass white dwarfs: formation mechanisms and further implications | |
Justham, S1,2; Podsiadlowski, P2; Han ZW(韩占文)3 ; Wolf, C2; Justham, S (reprint author), Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China.
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| 发表期刊 | ASTROPHYSICS AND SPACE SCIENCE
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| 2010-10 | |
| 卷号 | 329期号:1-2页码:3-10 |
| DOI | 10.1007/s10509-010-0341-y |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Subdwarfs White Dwarfs Supernovae Binaries: Close |
| 摘要 | Variations in the mass loss from single stars have been used to explain the existence of hot subdwarf stars and the existence of single low-mass white dwarfs (LMWDs). Hence remaining uncertainty in mass loss from single red-giant stars is important to the understanding of these problems. However, natural formation channels for hot subdwarfs and single LMWDs have also been proposed which do not rely on unexplained mass loss from single red-giant stars. We outline these, and discuss how the different mechanisms could be distinguished. For example, a formation channel for single LMWDs which involves the break-up of a binary system by a type Ia supernova should produce a population of single LMWDs with a distinct kinematic signature. If that population is found to exist, it could be used to study one of the popular single-degenerate formation channels for type Ia supernovae in a previously impossible way. In addition, we examine the formation of helium-rich sdO stars-which are shown to emerge from one of the previously existing binary formation channels for hot subdwarfs. Both the SN Ia formation mechanism for single LMWDs and the formation channel for He-sdOs are a natural consequence of existing models. Hence if these formation channels do not work at all, then the result is a significant one. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-640X |
| URL | 查看原文 |
| WOS记录号 | WOS:000282823200002 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | LATE STELLAR EVOLUTION ; IA PROGENITOR SURVEY ; B-STARS ; SDB STARS ; DIFFERENT METALLICITIES ; ATMOSPHERIC PARAMETERS ; HORIZONTAL-BRANCH ; 2ND PARAMETER ; RS OPHIUCHI ; O-STARS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4484 |
| 专题 | 大样本恒星演化研究组 |
| 通讯作者 | Justham, S (reprint author), Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China. |
| 作者单位 | 1.The Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, China 2.Sub-department of Astrophysics, Oxford University, Oxford, UK 3.National Astronomical Observatories/Yunnan Observatory, The Chinese Academy of Sciences, Kunming, China |
| 推荐引用方式 GB/T 7714 | Justham, S,Podsiadlowski, P,Han ZW,et al. Helium-rich hot subdwarfs and single low-mass white dwarfs: formation mechanisms and further implications[J]. ASTROPHYSICS AND SPACE SCIENCE,2010,329(1-2):3-10. |
| APA | Justham, S,Podsiadlowski, P,Han ZW,Wolf, C,&Justham, S .(2010).Helium-rich hot subdwarfs and single low-mass white dwarfs: formation mechanisms and further implications.ASTROPHYSICS AND SPACE SCIENCE,329(1-2),3-10. |
| MLA | Justham, S,et al."Helium-rich hot subdwarfs and single low-mass white dwarfs: formation mechanisms and further implications".ASTROPHYSICS AND SPACE SCIENCE 329.1-2(2010):3-10. |
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| Helium-rich hot subd（356KB） | 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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