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Accreting He-rich material onto carbon-oxygen white dwarfs until explosive carbon ignition
Wu CY(吴程远)1,2,3; Liu DD(刘栋栋)1,2,3; Zhou, Wei-Hong2,4; Wang B(王博)1,2
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2016-10-01
卷号16期号:10页码:160-U98
DOI10.1088/1674-4527/16/10/160
产权排序第1完成单位
收录类别SCI
关键词Stars: Evolution Binaries: Close Supernovae: General White Dwarfs
摘要

Type Ia supernovae (SNe Ia) play an important role in studies of cosmology and galactic chemical evolution. They are believed to be thermonuclear explosions of carbon-oxygen white dwarfs (CO WDs) when their masses approach the Chandrasekar (Ch) mass limit. However, it is still not completely understood how a CO WD increases its mass to the Ch-mass limit in the classical single-degenerate (SD) model. In this paper, we studied the mass accretion process in the SD model to examine whether the WD can explode as an SN Ia. Employing the stellar evolution code called modules for experiments in stellar astrophysics (MESA), we simulated the He accretion process onto CO WDs. We found that the WD can increase its mass to the Ch-mass limit through the SD model and explosive carbon ignition finally occurs in its center, which will lead to an SN Ia explosion. Our results imply that SNe Ia can be produced from the SD model through steady helium accretion. Moreover, this work can provide initial input parameters for explosion models of SNe Ia.

资助项目N/A
项目资助者N/A
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
归档日期2016-12-30
WOS记录号WOS:000385996000011
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]STELLAR ASTROPHYSICS MESA ; I SUPER-NOVAE ; EDDINGTON WIND SCENARIO ; X-RAY ; COMPANION STARS ; HD 49798 ; PROGENITORS ; EVOLUTION ; BINARIES ; MODEL
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9750
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)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Yunnan Minzu University, Kunming 650031, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Wu CY,Liu DD,Zhou, Wei-Hong,et al. Accreting He-rich material onto carbon-oxygen white dwarfs until explosive carbon ignition[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(10):160-U98.
APA Wu CY,Liu DD,Zhou, Wei-Hong,&Wang B.(2016).Accreting He-rich material onto carbon-oxygen white dwarfs until explosive carbon ignition.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(10),160-U98.
MLA Wu CY,et al."Accreting He-rich material onto carbon-oxygen white dwarfs until explosive carbon ignition".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.10(2016):160-U98.
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