On the evolution of rotating accreting white dwarfs and Type Ia supernovae
文献类型：期刊论文
| 作者 | Wang, B.1,2 ; Justham, S.3; Liu, Z-W.4; Zhang, J-J.1,2; Liu, D-D.1,2; Han, Z.1,2
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2014-12-11 |
| 卷号 | 445期号:3页码:2340-2352 |
| 关键词 | binaries: close stars: evolution supernovae: general white dwarfs |
| 英文摘要 | The potential importance of the angular momentum which is gained by accreting white dwarfs (WDs) has been increasingly recognized in the context of Type Ia supernova (SN Ia) single-degenerate model. The expectation that the spin of the WD can delay the explosion should help the single-degenerate model to be consistent with the observed properties of most SNe Ia, in particular by avoiding hydrogen contamination. In this paper, we attempt to study the most prominent single-degenerate supersoft (WD + MS) channel when the rotation of accreting WDs is considered. We present a detailed binary population synthesis study to examine the predicted population of SNe Ia for this channel. For our standard model, we find that 77 per cent of these SNe Ia explode with WD masses which are low enough to be supported by solid-body rotation (<= 1.5 M-circle dot); this is a substantially higher proportion than found by previous work. Only 2 per cent have WD explosion masses >= 2.0 M-circle dot; these require the initial WD mass to be larger than 1.0 M-circle dot. We further discuss the possible origin of the diversity of SNe Ia from the pre- and post-accretion properties of the WDs in this population. We also suggest that some SN Ia progenitors with substantial circumstellar hydrogen, including some apparent Type IIn SNe, might be related to WDs which required support from differential rotation to avoid explosion, since these can still be accreting from hydrogen-rich donors with a relatively high mass-transfer rate at the time of the SN explosion. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000346962900016 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6530]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China 2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Argelander Inst Astron, D-53121 Bonn, Germany |
| 推荐引用方式 GB/T 7714 | Wang, B.,Justham, S.,Liu, Z-W.,et al. On the evolution of rotating accreting white dwarfs and Type Ia supernovae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,445(3):2340-2352. |
| APA | Wang, B.,Justham, S.,Liu, Z-W.,Zhang, J-J.,Liu, D-D.,&Han, Z..(2014).On the evolution of rotating accreting white dwarfs and Type Ia supernovae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,445(3),2340-2352. |
| MLA | Wang, B.,et al."On the evolution of rotating accreting white dwarfs and Type Ia supernovae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 445.3(2014):2340-2352. |
入库方式： OAI收割
来源：国家天文台
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