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Why Are Peculiar Type Ia Supernovae More Likely to Show the Signature of a Single-degenerate Model?
Meng XC(孟祥存)1,2,3; Han ZW(韩占文)1,2,3; Meng, Xiang-Cun(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
2018-03-10
发表期刊ASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
卷号855期号:2
产权排序第1完成单位
摘要Although type Ia supernovae (SNe Ia) are very useful in many astrophysical fields, their exact progenitor nature is still unclear. A basic method to distinguish the different progenitor models is to search the signal from the single-degenerate (SD) model, e.g., the signal for the existence of a nondegenerate companion before or after supernova explosion. Observationally, some SNe Ia show such signals, while the others do not. Here, we propose a universal model to explain these observations based on the spin-up/spin-down model, in which a white dwarf (WD) will experience a spin-down phase before supernova explosion, and the spin-down timescale is determined by its initial mass, i.e., the more massive the initial WD, the shorter the spin-down timescale and then the more likely the SN Ia is to show the SD signature. Therefore, our model predicts that the SNe Ia from hybrid carbon-oxygen-neon WDs are more likely to show the SD signature observationally, as some peculiar SNe Ia showed.
关键词Ism: Supernova Remnants Supernovae: General White Dwarfs
学科领域天文学
DOI10.3847/2041-8213/aab159
项目资助者NSFC(11473063, 11522327, 11390374, 11521303, 11733008) ; Yunnan Foundation(11733008, 2015HB096) ; CAS light of West China Program ; CAS(KJZD-EW-M06-01) ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005)
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收录类别SCI
语种英语
文章类型Article
WOS研究方向Astronomy & Astrophysics
WOS标题词Science & Technology ; Physical Sciences
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000427064600004
关键词[WOS]PROGENITOR SYSTEM ; COMPANION STAR ; WHITE-DWARFS ; EVOLUTION ; EXPLOSION ; GIANT
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12143
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Meng, Xiang-Cun(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, People's Republic of China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
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Meng XC,Han ZW,Meng, Xiang-Cun. Why Are Peculiar Type Ia Supernovae More Likely to Show the Signature of a Single-degenerate Model?[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,855(2).
APA Meng XC,Han ZW,&Meng, Xiang-Cun.(2018).Why Are Peculiar Type Ia Supernovae More Likely to Show the Signature of a Single-degenerate Model?.ASTROPHYSICAL JOURNAL LETTERS,855(2).
MLA Meng XC,et al."Why Are Peculiar Type Ia Supernovae More Likely to Show the Signature of a Single-degenerate Model?".ASTROPHYSICAL JOURNAL LETTERS 855.2(2018).
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