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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
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2020-05-01
Volume494Issue:3Pages:3422-3431
DOI10.1093/mnras/staa963
Contribution Rank第1完成单位
Indexed BySCI
Keywordstars: evolution stars: neutron supernovae: general white dwarfs
Abstract

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.

Funding ProjectNatural 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]
Funding OrganizationNatural 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]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000535882100029
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordNICKEL-RICH OUTFLOWS ; R-CORONAE-BOREALIS ; IA SUPERNOVAE ; DOUBLE-DEGENERATE ; CORE COLLAPSE ; KPD 1930+2752 ; INITIAL MASS ; EVOLUTION ; PROGENITORS ; BINARIES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/23370
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 AuthorLiu DD(刘栋栋); Wang B(王博)
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
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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