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Chinese Academy of Sciences Institutional Repositories Grid
Subdwarf B stars as possible surviving companions in Type Ia supernova remnants

文献类型:期刊论文

作者Meng XC(孟祥存)1,2,3; Li J(李蛟)1,2,4
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2019-02-01
卷号482期号:4页码:5651-5665
ISSN号0035-8711
关键词supernovae: general white dwarfs ISM: supernova remnants
DOI10.1093/mnras/sty3092
产权排序第1完成单位
文献子类Article
英文摘要

Although Type Ia supernovae (SNe Ia) are so important in many astrophysical fields, a debate on their progenitor model is still endless. Searching the surviving companion in a supernova remnant (SNR) may distinguish different progenitor models, since a companion still exists in the remnant for the single-degenerate (SD) model, but does not for the double-degenerate (DD) model. However, some recent surveys do not discover the surviving companions in the remnant of SN 1006 and Kepler's supernova, which seems to disfavour the SD model. Such a result could be derived from an incorrect survey target. Here, based on the common-envelope wind SD model for SNe Ia, in which the initial binary system consists of a white dwarf (WD) and a main-sequence (MS) star, we found that the companion at the moment of supernova explosion may be an MS, red-giant (RG), or subdwarf B (sdB) star if a spin-down time-scale of less than 10(7) yr is assumed. We show the properties of the companions at the moment of supernova explosion, which are key clues to search the surviving companions in SNRs. Here, we suggest that the sdB star may be the surviving companion in some SNRs, even if the progenitor systems are the WD + MS systems. The SNe Ia with the sdB companions may contribute to all SNe Ia as much as 22 percent.

学科主题天文学 ; 恒星与银河系 ; 恒星形成与演化
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词ASYMPTOTIC-GIANT-BRANCH ; WHITE-DWARFS ; PROGENITOR SYSTEM ; COMMON-ENVELOPE ; SN-1006 REMNANT ; PROPER MOTIONS ; MAIN-SEQUENCE ; RED GIANT ; TYCHO-G ; EVOLUTION
资助项目NSFC[11473063] ; NSFC[11522327] ; NSFC[11390374] ; NSFC[11521303] ; NSFC[11733008] ; Yunnan Foundation[2015HB096] ; Yunnan Foundation[2017HC018] ; CAS Light of West China Program ; CAS[KJZD-EW-M06-01]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000462327300104
资助机构NSFC[11473063, 11522327, 11390374, 11521303, 11733008] ; Yunnan Foundation[2015HB096, 2017HC018] ; CAS Light of West China Program ; CAS[KJZD-EW-M06-01]
源URL[http://ir.ynao.ac.cn/handle/114a53/19677]  
专题云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Meng XC(孟祥存); Li J(李蛟)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, P.R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, P.R. China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, P.R. China
4.University of Chinese Academy of Sciences, Beijing 100049, China
推荐引用方式
GB/T 7714
Meng XC,Li J. Subdwarf B stars as possible surviving companions in Type Ia supernova remnants[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,482(4):5651-5665.
APA Meng XC,&Li J.(2019).Subdwarf B stars as possible surviving companions in Type Ia supernova remnants.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,482(4),5651-5665.
MLA Meng XC,et al."Subdwarf B stars as possible surviving companions in Type Ia supernova remnants".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 482.4(2019):5651-5665.

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来源:云南天文台

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