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Host galaxy properties of mergers of stellar binary black holes and their implications for advanced LIGO gravitational wave sources
Cao, Liang1,2; Lu, Youjun1,2; Zhao, Yuetong1,2
2018-03-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume474Issue:4Pages:4997-5007
AbstractUnderstanding the host galaxy properties of stellar binary black hole (SBBH) mergers is important for revealing the origin of the SBBH gravitational wave sources detected by advanced LIGO and helpful for identifying their electromagnetic counterparts. Here, we present a comprehensive analysis of the host galaxy properties of SBBHs by implementing semi-analytical recipes for SBBH formation and merger into cosmological galaxy formation model. If the time delay between SBBH formation and merger ranges from less than or similar to Gyr to the Hubble time, SBBH mergers at redshift z less than or similar to 0.3 occur preferentially in big galaxies with stellar mass M* greater than or similar to 2 x 10(10)M(circle dot) and metallicities Z peaking at similar to 0.6 Z(circle dot). However, the host galaxy stellar mass distribution of heavy SBBH mergers (M-center dot center dot greater than or similar to 50M(circle dot)) is bimodal with one peak at similar to 10(9) M-circle dot and the other peak at similar to 2 x 10(10) M-circle dot. The contribution fraction from host galaxies with Z similar to 0.2Z(circle dot) to heavy mergers is much larger than that to less heavy mergers. If SBBHs were formed in the early Universe (e. g. z > 6), their mergers detected at z less than or similar to 0.3 occur preferentially in even more massive galaxies with M* > 3 x 10(10) M-circle dot and in galaxies with metallicities mostly greater than or similar to 0.2Z(circle dot) and peaking at Z similar to 0.6 Z(circle dot), due to later cosmic assembly and enrichment of their host galaxies. SBBH mergers at z less than or similar to 0.3 mainly occur in spiral galaxies, but the fraction of SBBH mergers that occur in elliptical galaxies can be significant if those SBBHs were formed in the early Universe; and about two-thirds of those mergers occur in the central galaxies of dark matter haloes. We also present results on the host galaxy properties of SBBH mergers at higher redshift.
Keywordblack hole physics gravitational waves galaxies: abundance galaxies: statistics
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development
DOI10.1093/mnras/stx3087
WOS KeywordPOPULATION SYNTHESIS ; MASSIVE STARS ; EVOLUTION ; RATES ; METALLICITY ; SIMULATION ; SUPERNOVAE ; GW150914 ; REMNANTS ; MODELS
Language英语
Funding ProjectNational Natural Science Foundation of China[11690024] ; National Natural Science Foundation of China[11373031] ; National Natural Science Foundation of China[11390372] ; Strategic Priority Program of the Chinese Academy of Sciences[XDB 23040100] ; National Key Program for Science and Technology Research and Development[2016YFA0400704]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000424977800055
PublisherOXFORD UNIV PRESS
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/37249
Collection中国科学院国家天文台
Corresponding AuthorCao, Liang; Lu, Youjun
Affiliation1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Cao, Liang,Lu, Youjun,Zhao, Yuetong. Host galaxy properties of mergers of stellar binary black holes and their implications for advanced LIGO gravitational wave sources[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,474(4):4997-5007.
APA Cao, Liang,Lu, Youjun,&Zhao, Yuetong.(2018).Host galaxy properties of mergers of stellar binary black holes and their implications for advanced LIGO gravitational wave sources.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,474(4),4997-5007.
MLA Cao, Liang,et al."Host galaxy properties of mergers of stellar binary black holes and their implications for advanced LIGO gravitational wave sources".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 474.4(2018):4997-5007.
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