Host galaxy properties of mergers of stellar binary black holes and their implications for advanced LIGO gravitational wave sources

doi:10.1093/mnras/stx3087

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	Host galaxy properties of mergers of stellar binary black holes and their implications for advanced LIGO gravitational wave sources
	Cao, Liang 1,2; Lu, Youjun 1,2; Zhao, Yuetong 1,2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2018-03-01
卷号	474 期号:4 页码:4997-5007
关键词	black hole physics gravitational waves galaxies: abundance galaxies: statistics
ISSN号	0035-8711
DOI	10.1093/mnras/stx3087
英文摘要	Understanding 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.
资助项目	National 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]
WOS关键词	POPULATION SYNTHESIS ; MASSIVE STARS ; EVOLUTION ; RATES ; METALLICITY ; SIMULATION ; SUPERNOVAE ; GW150914 ; REMNANTS ; MODELS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000424977800055
资助机构	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 ; 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
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/37248]
专题	中国科学院国家天文台
通讯作者	Cao, Liang; Lu, Youjun
作者单位	1.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
推荐引用方式 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.