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Gravitational-wave Radiation of Double Degenerates with Extremely Low-mass White Dwarf Companions
Li ZW(李振威)1,2,3; Chen XF(陈雪飞)1,2,4; Chen HL(陈海亮)1,2; Li J(李姣)1,2,3; Yu, Shenghua5; Han ZW(韩占文)1,2,4
Source PublicationASTROPHYSICAL JOURNAL
2020-04-10
Volume893Issue:1Pages:13
DOI10.3847/1538-4357/ab7dc2
Contribution Rank第1完成单位
Indexed BySCI
KeywordGravitational waves Close binary stars White dwarf stars
Abstract

Double degenerate (DD) systems are supposed to be significant gravitational-wave (GW) sources for future space-based GW detectors, e.g., the Laser Interferometer Space Antenna (LISA). Recently, one type of DD system with extremely low-mass WD (ELM WD; less than or similar to 0.30 M-;) companions was found in the ELM Survey. These companions have very short orbital periods and are therefore important sources for LISA detection. Further, due to the thick envelope of ELM WDs compared with massive WDs (e.g., CO WDs), they are much easier to find through the combination of electromagnetic (EM) and GW observations. In this paper, we first obtain the population of ELM WDs in DDs by considering the detailed evolutionary tracks of ELM WDs and then analyzing the GW radiation of these systems. We found that about 6 x 10(3) sources could be solely detected by LISA, including similar to 2 x 10(3) chirping sources, and similar to 13 (similar to 107) more sources are expected to be detected by both LISA and the ELM Survey (Gaia).

Funding ProjectNatural Science Foundation of China[11733008] ; Natural Science Foundation of China[11521303] ; Natural Science Foundation of China[11703081] ; Natural Science Foundation of China[11422324] ; National Ten-thousand talents program ; Yunnan province[2017HC018] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018076] ; CAS 'Light of West China' Program
Funding OrganizationNatural Science Foundation of China[11733008, 11521303, 11703081, 11422324] ; National Ten-thousand talents program ; Yunnan province[2017HC018] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018076] ; CAS 'Light of West China' Program
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
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000525504100001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordINTERFEROMETER-SPACE-ANTENNA ; COMMON-ENVELOPE PHASE ; STELLAR EVOLUTION ; BINARIES ; LISA ; GAIA ; POPULATION ; STARS ; MODEL ; MILKY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/23039
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 AuthorChen XF(陈雪飞)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, People's Republic of China
3.University of the Chinese Academy of Sciences, Yuquan Road 19, Shijingshan Block, 100049, Beijing, People's Republic of China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China
5.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li ZW,Chen XF,Chen HL,et al. Gravitational-wave Radiation of Double Degenerates with Extremely Low-mass White Dwarf Companions[J]. ASTROPHYSICAL JOURNAL,2020,893(1):13.
APA Li ZW,Chen XF,Chen HL,Li J,Yu, Shenghua,&Han ZW.(2020).Gravitational-wave Radiation of Double Degenerates with Extremely Low-mass White Dwarf Companions.ASTROPHYSICAL JOURNAL,893(1),13.
MLA Li ZW,et al."Gravitational-wave Radiation of Double Degenerates with Extremely Low-mass White Dwarf Companions".ASTROPHYSICAL JOURNAL 893.1(2020):13.
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