Massive Stellar Mergers as Precursors of Hydrogen-rich Pulsational Pair Instability Supernovae
文献类型：期刊论文
| 作者 | Vigna-Gómez,Alejandro1,2,3; Justham,Stephen3,4,5,6,7; Mandel,Ilya1,2,3; de Mink,Selma E.3,6,7; Podsiadlowski,Philipp3,8 |
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2019-05-09 |
| 卷号 | 876期号:2 |
| 关键词 | binaries: general stars: massive supernovae: general |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ab1bdf |
| 英文摘要 | Abstract Interactions between massive stars in binaries are thought to be responsible for much of the observed diversity of supernovae. As surveys probe rarer populations of events, we should expect to see supernovae arising from increasingly uncommon progenitor channels. Here we examine a scenario in which massive stars merge after they have both formed a hydrogen-exhausted core. We suggest that this could produce stars that explode as pair-instability supernovae (PISNe) with significantly more hydrogen, at a given metallicity, than in single-star models with the same pre-explosion oxygen-rich core mass. We investigate the subset of those stellar mergers that later produce pulsational PISNe, and estimate that the rate of such post-merger, hydrogen-rich pulsational PISNe could approach a few in a thousand of all core-collapse supernovae. The nature and predicted rate of such hydrogen-rich pulsational PISNe are reminiscent of the very unusual supernova iPTF14hls. For plausible assumptions, PISNe from similar mergers might dominate the rate of PISNe in the local Universe. |
| 语种 | 英语 |
| WOS记录号 | IOP:2041-8205-876-2-AB1BDF |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/26174]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Birmingham Institute for Gravitational Wave Astronomy, University of Birmingham, Birmingham B15 2TT, UK; avigna@star.sr.bham.ac.uk 2.Monash Centre for Astrophysics, School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia 3.DARK, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100, Copenhagen, Denmark 4.School of Astronomy & Space Science, University of the Chinese Academy of Sciences, Beijing, People’s Republic of China 5.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 6.Anton Pannekoek Institute for Astronomy, University of Amsterdam, 1090 GE Amsterdam, The Netherlands 7.GRAPPA, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands 8.Department of Astronomy, Oxford University, Oxford OX1 3RH, UK |
| 推荐引用方式 GB/T 7714 | Vigna-Gómez,Alejandro,Justham,Stephen,Mandel,Ilya,et al. Massive Stellar Mergers as Precursors of Hydrogen-rich Pulsational Pair Instability Supernovae[J]. The Astrophysical Journal Letters,2019,876(2). |
| APA | Vigna-Gómez,Alejandro,Justham,Stephen,Mandel,Ilya,de Mink,Selma E.,&Podsiadlowski,Philipp.(2019).Massive Stellar Mergers as Precursors of Hydrogen-rich Pulsational Pair Instability Supernovae.The Astrophysical Journal Letters,876(2). |
| MLA | Vigna-Gómez,Alejandro,et al."Massive Stellar Mergers as Precursors of Hydrogen-rich Pulsational Pair Instability Supernovae".The Astrophysical Journal Letters 876.2(2019). |
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