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Accreting CO material onto ONe white dwarfs towards accretion-induced collapse
Wu CY(吴程远)1,2,3,4; Wang B(王博)1,2,3,4
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2018-03-01
Volume18Issue:3
DOI10.1088/1674-4527/18/3/36
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Evolution Binaries: Close Supernovae: General White Dwarfs
Abstract

The final outcomes of accreting ONe white dwarfs (ONe WDs) have been studied for several decades, but there are still some issues that are not resolved. Recently, some studies suggested that the deflagration of oxygen would occur for accreting ONe WDs with Chandrasekhar masses. In this paper, we aim to investigate whether ONe WDs can experience accretion-induced collapse (AIC) or explosions when their masses approach the Chandrasekhar limit. Employing the stellar evolution code Modules for Experiments in Stellar Astrophysics (MESA), we simulate the longterm evolution of ONe WDs with accreting CO material. The ONe WDs undergo weak multicycle carbon flashes during the mass-accretion process, leading to mass increase of the WDs. We found that different initial WD masses and mass-accretion rates influence the evolution of central density and temperature. However, the central temperature cannot reach the explosive oxygen ignition temperature due to neutrino cooling. This work implies that the final outcome of accreting ONe WDs is electron-capture induced collapse rather than thermonuclear explosion.

Funding ProjectNational Basic Research Program of China (973 program)[2014CB845700] ; Chinese Academy of Sciences[KJZD-EW-M06-01] ; Chinese Academy of Sciences[QYZDB-SSW-SYS001] ; National Natural Science Foundation of China[11673059] ; National Natural Science Foundation of China[11521303] ; National Natural Science Foundation of China[11390374] ; National Natural Science Foundation of China[11573016] ; Natural Science Foundation of Yunnan Province[2013HB097] ; Natural Science Foundation of Yunnan Province[2013HA005] ; Natural Science Foundation of Yunnan Province[2017HC018]
Funding OrganizationNational Basic Research Program of China (973 program)[2014CB845700] ; Chinese Academy of Sciences[KJZD-EW-M06-01, QYZDB-SSW-SYS001] ; National Natural Science Foundation of China[11673059, 11521303, 11390374, 11573016] ; Natural Science Foundation of Yunnan Province[2013HB097, 2013HA005, 2017HC018]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学
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
WOS IDWOS:000428268500012
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXTREME HELIUM STARS ; GAMMA-RAY BURSTS ; IA SUPERNOVAE ; MILLISECOND PULSARS ; CARBON IGNITION ; NEUTRON-STARS ; EVOLUTION ; BINARIES ; PROGENITORS ; MERGER
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12310
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 AuthorWu CY(吴程远)
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.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wu CY,Wang B. Accreting CO material onto ONe white dwarfs towards accretion-induced collapse[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(3).
APA Wu CY,&Wang B.(2018).Accreting CO material onto ONe white dwarfs towards accretion-induced collapse.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(3).
MLA Wu CY,et al."Accreting CO material onto ONe white dwarfs towards accretion-induced collapse".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.3(2018).
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