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The WD plus He star binaries as the progenitors of type Ia supernovae
Wang B(王博)1,2; Liu DD(刘栋栋)1,2; Wang B(王博), Email: wangbo@ynao.ac.cn
发表期刊OPEN ASTRONOMY
2017-04-01
卷号26期号:1页码:160-163
DOI10.1515/astro-2017-0018
产权排序第1完成单位
收录类别SCI
关键词White Dwarfs Binaries: Close Stars: Evolution
摘要Employing the MESA stellar evolution code, we computed He accretion onto carbon-oxygen white dwarfs (CO WDs). We found two possible outcomes for models in which the WD steadily grows in mass towards the Chandrasekhar limit. For relatively low He-accretion rates carbon ignition occurs in the center, leading to a type Ia supernova (SN Ia) explosion, whereas for relatively high accretion rates carbon is ignited off-center, probably leading to collapse. Thus the parameter space producing SNe Ia is reduced compared to what was assumed in earlier papers, in which the possibility of off-center ignition was ignored. We then applied these results in binary population synthesis modelling, finding a modest reduction in the expected birthrate of SNe Ia resulting from the WD+He star channel.
项目资助者National Natural Science Foundation of China(11390374)
语种英语
学科领域天文学
文章类型Article
ISSN2543-6376
URL查看原文
WOS记录号WOS:000427930200008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]WHITE-DWARFS ; EVOLUTION ; IGNITION
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12297
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Wang B(王博), Email: wangbo@ynao.ac.cn
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, CAS, Kunming 650216, China
2.Center for Astronomical Mega-Science, CAS, Beijing 100012, China
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Wang B,Liu DD,Wang B. The WD plus He star binaries as the progenitors of type Ia supernovae[J]. OPEN ASTRONOMY,2017,26(1):160-163.
APA Wang B,Liu DD,&Wang B.(2017).The WD plus He star binaries as the progenitors of type Ia supernovae.OPEN ASTRONOMY,26(1),160-163.
MLA Wang B,et al."The WD plus He star binaries as the progenitors of type Ia supernovae".OPEN ASTRONOMY 26.1(2017):160-163.
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