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The single-degenerate model for the progenitors of accretion-induced collapse events
Wang B(王博)1,2,3,4
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2018-11-01
卷号481期号:1页码:439-446
DOI10.1093/mnras/sty2278
产权排序第1完成单位
收录类别SCI
关键词stars: evolution supernovae: general white dwarfs binaries: close
摘要

It has been suggested that the accretion-induced collapse (AIC) of an oxygen-neon white dwarf (ONe WD) to a neutron star is a theoretically predicted outcome in stellar evolution, likely relating to the formation of some neutron star systems. However, the progenitor models of AIC events are still not well studied, and recent studies indicated that CO WD+He star systems may also contribute to the formation of neutron star systems through AIC process when off-centre carbon ignition happens on the surface of the CO WD. In this work, I studied the single-degenerate (SD) model of AIC events in a systematicway, including the contribution of the CO WD+He star channel and the ONe WD+MS/RG/He star channels. First, I gave the initial parameter space of these SD channels for producing AIC events in the orbital period-secondary mass plane based on detailed binary evolution computations. Then, according to a binary population synthesis approach, I gave the rates and delay times of AIC events for these SD channels based on their initial parameter space. I found that the rates of AIC events in our Galaxy are in the range of similar to(0.3-0.9) x 10(-3) yr(-1), and that their delay times are >30 Myr. I also found that the ONe WD+He star channel is the main way to produce AIC events, and that the COWD+He star channel cannot be ignored when studying the progenitors of AIC events.

资助项目National Natural Science Foundation of China[11873085] ; National Natural Science Foundation of China[11673059] ; National Natural Science Foundation of China[11390374] ; National Natural Science Foundation of China[11521303] ; Chinese Academy of Sciences[QYZDB-SSW-SYS001] ; Chinese Academy of Sciences[KJZD-EW-M06-01] ; Yunnan Province[2017HC018] ; Yunnan Province[2018FB005]
项目资助者National Natural Science Foundation of China[11873085, 11673059, 11390374, 11521303] ; Chinese Academy of Sciences[QYZDB-SSW-SYS001, KJZD-EW-M06-01] ; Yunnan Province[2017HC018, 2018FB005]
语种英语
学科领域天文学 ; 天体物理学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS记录号WOS:000449651400032
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SUBDWARF HD 49798 ; MILLISECOND RADIO PULSARS ; IA SUPERNOVA PROGENITORS ; RAY PULSATING COMPANION ; WHITE-DWARF COMPANIONS ; NEUTRON-STARS ; CORONAE-BOREALIS ; BINARY-SYSTEMS ; WIND EVOLUTION ; ONEMG CORES
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/18406
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.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
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GB/T 7714
Wang B. The single-degenerate model for the progenitors of accretion-induced collapse events[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,481(1):439-446.
APA Wang B.(2018).The single-degenerate model for the progenitors of accretion-induced collapse events.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,481(1),439-446.
MLA Wang B."The single-degenerate model for the progenitors of accretion-induced collapse events".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 481.1(2018):439-446.
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