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The formation of single neutron stars from double white-dwarf mergers via accretion-induced collapse
Liu DD(刘栋栋)1,2,3,4; Wang B(王博)1,2,3,4
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2020-05-01
卷号494期号:3页码:3422-3431
DOI10.1093/mnras/staa963
产权排序第1完成单位
收录类别SCI
关键词stars: evolution stars: neutron supernovae: general white dwarfs
摘要

The merging of double white dwarfs (WDs) may produce the events of accretion-induced collapse (AIC) and form single neutron stars (NSs). Meanwhile, it is also notable that the recently proposed WD+He subgiant scenario has a significant contribution to the production of massive double WDs, in which the primary WD grows in mass by accreting He-rich material from a He subgiant companion. In this work, we aim to study the binary population synthesis (BPS) properties of AIC events from the double WD mergers by considering the classical scenarios and also the contribution of the WD+He subgiant scenario to the formation of double WDs. First, we provided a dense and large model grid of WD+He star systems for producing AIC events through the double WD merger scenario. Secondly, we performed several sets of BPS calculations to obtain the rates and single NS number in our Galaxy. We found that the rates of AIC events from the double WD mergers in the Galaxy are in the range of 1.4-8.9 x 10(-3) yr(-1) for all ONe/CO WD+ONe/CO WD mergers, and in the range of 0.3-3.8 x 10(-3) yr(-1) when double CO WD mergers are not considered. We also found that the number of single NSs from AIC events in our Galaxy may range from 0.328 x 10(7) to 1.072 x 10(8). The chirp mass of double WDs for producing AIC events distribute in the range of 0.55-1.25 M-circle dot. We estimated that more than half of double WDs for producing AIC events are capable to be observed by the future space-based gravitational wave detectors.

资助项目Natural Science Foundation of China[11903075] ; Natural Science Foundation of China[11873085] ; Natural Science Foundation of China[11673059] ; Natural Science Foundation of China[11521303] ; Chinese Academy of Sciences[QYZDB-SSW-SYS001] ; Western Light Youth Project of Chinese Academy of Sciences ; Yunnan Province[2018FB005] ; Yunnan Province[2019FJ001]
项目资助者Natural Science Foundation of China[11903075, 11873085, 11673059, 11521303] ; Chinese Academy of Sciences[QYZDB-SSW-SYS001] ; Western Light Youth Project of Chinese Academy of Sciences ; Yunnan Province[2018FB005, 2019FJ001]
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星形成与演化
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:000535882100029
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]NICKEL-RICH OUTFLOWS ; R-CORONAE-BOREALIS ; IA SUPERNOVAE ; DOUBLE-DEGENERATE ; CORE COLLAPSE ; KPD 1930+2752 ; INITIAL MASS ; EVOLUTION ; PROGENITORS ; BINARIES
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/23370
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Liu DD(刘栋栋); 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.University of Chinese Academy of Sciences, Beijing 100049, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Liu DD,Wang B. The formation of single neutron stars from double white-dwarf mergers via accretion-induced collapse[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,494(3):3422-3431.
APA Liu DD,&Wang B.(2020).The formation of single neutron stars from double white-dwarf mergers via accretion-induced collapse.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,494(3),3422-3431.
MLA Liu DD,et al."The formation of single neutron stars from double white-dwarf mergers via accretion-induced collapse".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 494.3(2020):3422-3431.
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