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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; Wu CY(吴程远), Email: wcy@ynao.ac.cn
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2018-03-01
卷号18期号:3
DOI10.1088/1674-4527/18/3/36
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.
项目资助者National 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)
语种英语
学科领域天文学
文章类型Article
ISSN1674-4527
URL查看原文
WOS记录号WOS:000428268500012
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EXTREME HELIUM STARS ; GAMMA-RAY BURSTS ; IA SUPERNOVAE ; MILLISECOND PULSARS ; CARBON IGNITION ; NEUTRON-STARS ; EVOLUTION ; BINARIES ; PROGENITORS ; MERGER
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12310
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Wu CY(吴程远), Email: wcy@ynao.ac.cn
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.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
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Wu CY,Wang B,Wu CY. 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,&Wu CY.(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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