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题名:
Why Are Peculiar Type Ia Supernovae More Likely to Show the Signature of a Single-degenerate Model?
作者: Meng XC(孟祥存)1,2,3; Han ZW(韩占文)1,2,3
刊名: ASTROPHYSICAL JOURNAL LETTERS
出版日期: 2018-03-10
卷号: 855, 期号:2
DOI: 10.3847/2041-8213/aab159
学科分类: 天文学
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Meng, Xiang-Cun(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
关键词: ISM: supernova remnants ; supernovae: general ; white dwarfs
英文摘要: 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.
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)
语种: 英语
原文出处: 查看原文
ISSN号: 2041-8205
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: PROGENITOR SYSTEM ; COMPANION STAR ; WHITE-DWARFS ; EVOLUTION ; EXPLOSION ; GIANT
WOS记录号: WOS:000427064600004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/12143
Appears in Collections:大样本恒星演化研究组_期刊论文
中国科学院天体结构与演化重点实验室_期刊论文

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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

Recommended Citation:
Meng XC,Han ZW. Why Are Peculiar Type Ia Supernovae More Likely to Show the Signature of a Single-degenerate Model?[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,855(2).
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