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Super-Eddington wind scenario for the progenitors of type Ia supernovae: Accreting He-rich matter onto white dwarfs
Wang B(王博)1,2; Li Y(李焱)1,2; Ma X(马鑫)1,2; Liu DD(刘栋栋)1,2; Cui X(崔晓)1,2; Han ZW(韩占文)1,2
Source PublicationASTRONOMY & ASTROPHYSICS
2015-12
Volume584Issue:37
DOI10.1051/0004-6361/201526569
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordStars: Evolution Binaries: Close Supernovae: General White Dwarfs
Abstract

Context. Supernovae of type Ia (SNe Ia) are believed to be thermonuclear explosions of carbon-oxygen white dwarfs (CO WDs). However, the mass accretion process onto CO WDs is still not completely understood. 

Aims. In this paper, we study the accretion of He-rich matter onto CO WDs and explore a scenario in which a strong wind forms on the surface of the WD if the total luminosity exceeds the Eddington limit. 

Methods. Using a stellar evolution code called modules for experiments in stellar astrophysics (MESA), we simulated the He accretion process onto CO WDs for WDs with masses of 0.6-1.35 M-circle dot and various accretion rates of 10(-8)-10(-5) M-circle dot yr(-1). 

Results. If the contribution of the total luminosity is included when determining the Eddington accretion rate, then a super-Eddington wind could be triggered at relatively lower accretion rates than those of previous studies based on steady-state models. The super-Eddington wind can prevent the WDs with high accretion rates from evolving into red-giant-like He stars. We found that the contributions from thermal energy of the WD are non-negligible, judging by our simulations, even though the nuclear burning energy is the dominating source of luminosity. We also provide the limits of the steady He-burning regime in which the WDs do not lose any accreted matter and increase their mass steadily, and calculated the mass retention efficiency during He layer flashes for various WD masses and accretion rates. These obtained results can be used in future binary population synthesis computations.

Funding ProjectNational Basic Research Program of China (973 programme)[2014CB845700] ; National Natural Science Foundation of China[11390374] ; National Natural Science Foundation of China[11521303] ; National Natural Science Foundation of China[11322327] ; National Natural Science Foundation of China[U1331117] ; Chinese Academy of Sciences[KJZD-EW-M06-01] ; Chinese Academy of Sciences[XDB09010202] ; Natural Science Foundation of Yunnan Province[2013HB097] ; Natural Science Foundation of Yunnan Province[2013FB083]
Funding OrganizationNational Basic Research Program of China (973 programme)[2014CB845700] ; National Natural Science Foundation of China[11390374, 11521303, 11322327, U1331117] ; Chinese Academy of Sciences[KJZD-EW-M06-01, XDB09010202] ; Natural Science Foundation of Yunnan Province[2013HB097,2013FB083]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
Archive Date2015-12-02
WOS IDWOS:000366936800037
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTELLAR ASTROPHYSICS MESA ; AM CVN STARS ; DELAY TIMES ; HELIUM NOVA ; POPULATION SYNTHESIS ; MASS LIMIT ; EVOLUTION ; BINARY ; MODEL ; SHELL
EI Accession Number20154801608922
EI KeywordsWhite dwarfs
EI Classification Number657.2Extraterrestrial Physics and Stellar Phenomena - 804Chemical Products Generally
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9393
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, 650216 Kunming, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, PR China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang B,Li Y,Ma X,et al. Super-Eddington wind scenario for the progenitors of type Ia supernovae: Accreting He-rich matter onto white dwarfs[J]. ASTRONOMY & ASTROPHYSICS,2015,584(37).
APA Wang B,Li Y,Ma X,Liu DD,Cui X,&Han ZW.(2015).Super-Eddington wind scenario for the progenitors of type Ia supernovae: Accreting He-rich matter onto white dwarfs.ASTRONOMY & ASTROPHYSICS,584(37).
MLA Wang B,et al."Super-Eddington wind scenario for the progenitors of type Ia supernovae: Accreting He-rich matter onto white dwarfs".ASTRONOMY & ASTROPHYSICS 584.37(2015).
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