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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
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2016-10-01
Volume16Issue:10Pages:160-U98
DOI10.1088/1674-4527/16/10/160
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Evolution Binaries: Close Supernovae: General White Dwarfs
Abstract

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.

Funding ProjectN/A
Funding OrganizationN/A
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
Archive Date2016-12-30
WOS IDWOS:000385996000011
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTELLAR ASTROPHYSICS MESA ; I SUPER-NOVAE ; EDDINGTON WIND SCENARIO ; X-RAY ; COMPANION STARS ; HD 49798 ; PROGENITORS ; EVOLUTION ; BINARIES ; MODEL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9750
Collection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
Corresponding AuthorWang B(王博)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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