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Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae
Liu DD(刘栋栋)1,2,3; Wang B(王博)1,2,3; Wu CY(吴程远)1,2,3; Liu DD(刘栋栋), Email: liudongdong@ynao.ac.cn
发表期刊OPEN ASTRONOMY
2017-04-01
卷号26期号:1页码:195-198
DOI10.1515/astro-2017-0436
产权排序第1完成单位
收录类别SCI
关键词Binaries: Close Stars: Evolution Supernovae: General
摘要Recent studies suggested that at least some of the observed SNe Ia originate from the double-degenerate model, which involves the merging of double carbon-oxygen white dwarfs (CO WDs). However, the delay time distributions predicted by previous theoretical studies are inconsistent with the observed SNe Ia at the early epoches of < 1 Gyr and old epoches of > 8 Gyr. Previous studies suggested that the CO WD+He subgiant channel has a significant contribution to the formation of massive double CO WDs, the merging of which may produce SNe Ia. In the present work, we added this channel into the double-degenerate model to investigate its influence on the delay time distributions of SNe Ia. We found that the delay time distributions would match better with the observed SNe Ia when the CO WD+He subgiant channel is included in the double-degenerate model.
项目资助者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:000427930200013
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DELAY-TIME DISTRIBUTION ; WHITE-DWARFS ; PROGENITORS ; STARS ; MERGERS ; MASS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12298
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Liu DD(刘栋栋), Email: liudongdong@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.University of Chinese Academy of Sciences, Beijing 100049, China
3.Center for Astronomical Mega-Science, CAS, Beijing 100012, China
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GB/T 7714
Liu DD,Wang B,Wu CY,et al. Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae[J]. OPEN ASTRONOMY,2017,26(1):195-198.
APA Liu DD,Wang B,Wu CY,&Liu DD.(2017).Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae.OPEN ASTRONOMY,26(1),195-198.
MLA Liu DD,et al."Double CO WD systems from the WD plus He subgiant channel and type Ia supernovae".OPEN ASTRONOMY 26.1(2017):195-198.
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