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The helium star donor channel for the progenitors of Type Ia supernovae
Wang B(王博)1,2; Meng, X3; Chen XF(陈雪飞)1; Han ZW(韩占文)1; Wang, B (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2009-05-11
Volume395Issue:2Pages:847-854
DOI10.1111/j.1365-2966.2009.14545.x
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Stars: Evolution Supernovae: General White Dwarfs
AbstractType Ia supernovae (SNe Ia) play an important role in astrophysics, especially in the study of cosmic evolution. Several progenitor models for SNe Ia have been proposed in the past. In this paper we carry out a detailed study of the He star donor channel, in which a carbon-oxygen white dwarf (CO WD) accretes material from a He main-sequence star or a He subgiant to increase its mass to the Chandrasekhar mass. Employing Eggleton's stellar evolution code with an optically thick wind assumption, and adopting the prescription of Kato & Hachisu for the mass accumulation efficiency of the He-shell flashes on to the WDs, we performed binary evolution calculations for about 2600 close WD binary systems. According to these calculations, we mapped out the initial parameters for SNe Ia in the orbital period-secondary mass (log P(i)-M(2)(i)) plane for various WD masses from this channel. The study shows that the He star donor channel is noteworthy for producing SNe Ia (similar to 1.2 x 10(-3) yr(-1) in our Galaxy), and that the progenitors from this channel may appear as supersoft X-ray sources. Importantly, this channel can explain SNe Ia with short delay times (similar to 10(8) yr), which is consistent with the recent observational implications of young populations of SN Ia progenitors.
Funding OrganizationNational Natural Science Foundation of China [10433030, 10521001, 2007CB815406, 10603013] ; Foundation of the Chinese Academy of Sciences [06YQ011001]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0035-8711
URL查看原文
Archive Date2009-04-28
WOS IDWOS:000265509500020
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordX-RAY SOURCES ; SINGLE-DEGENERATE MODEL ; ACCRETING WHITE-DWARFS ; STELLAR EVOLUTION ; EXPLOSION MODELS ; BINARY-SYSTEMS ; KPD 1930+2752 ; NEUTRON-STAR ; SHELL SOURCE ; LOW-MASS
Citation statistics
Cited Times:119[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/4475
Collection大样本恒星演化研究组
Corresponding AuthorWang, B (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
Affiliation1.ational Astronomical Observatories/Yunnan Observatory, the Chinese Academy of Sciences, Kunming 650011, China
2.Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
3.Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454003, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang B,Meng, X,Chen XF,et al. The helium star donor channel for the progenitors of Type Ia supernovae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2009,395(2):847-854.
APA Wang B,Meng, X,Chen XF,Han ZW,&Wang, B .(2009).The helium star donor channel for the progenitors of Type Ia supernovae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,395(2),847-854.
MLA Wang B,et al."The helium star donor channel for the progenitors of Type Ia supernovae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 395.2(2009):847-854.
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