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A wide star-black-hole binary system from radial-velocity measurements

文献类型:期刊论文

AuthorLiu, Jifeng1,2,3; Zhang, Haotong1; Howard, Andrew W.4; Bai, Zhongrui1; Lu, Youjun1,2; Soria, Roberto2,5; Justham, Stephen1,2,6; Li, Xiangdong7,8; Zheng, Zheng9; Wang, Tinggui10
SourceNATURE
Issued Date2019-11-28
Volume575Issue:7784Pages:618-+
ISSN0028-0836
DOI10.1038/s41586-019-1766-2
Rank第26完成单位
SubtypeArticle
English Abstract

All stellar-mass black holes have hitherto been identified by X-rays emitted from gas that is accreting onto the black hole from a companion star. These systems are all binaries with a black-hole mass that is less than 30 times that of the Sun(1-4). Theory predicts, however, that X-ray-emitting systems form a minority of the total population of star-black-hole binaries(5,6). When the black hole is not accreting gas, it can be found through radial-velocity measurements of the motion of the companion star. Here we report radial-velocity measurements taken over two years of the Galactic B-type star, LB-1. We find that the motion of the B star and an accompanying Ha emission line require the presence of a dark companion with a mass of 68(+11)(-13) solar masses, which can only be a black hole. The long orbital period of 78.9 days shows that this is a wide binary system. Gravitational-wave experiments have detected black holes of similar mass, but the formation of such massive ones in a high-metallicity environment would be extremely challenging within current stellar evolution theories.

Subject天文学 ; 恒星与银河系
URL查看原文
Publish PlaceMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
WOS KeywordBLANKETED MODEL ATMOSPHERES ; X-RAY BINARIES ; M-CIRCLE-DOT ; STELLAR EVOLUTION ; FUNDAMENTAL PLANE ; ACCRETION FLOWS ; MASS ; EMISSION ; ISOCHRONES ; SPECTRUM
Funding ProjectNational Science Foundation of China (NSFC)[11988101/11425313] ; National Science Foundation of China (NSFC)[11773015/11333004/U1838201] ; National Science Foundation of China (NSFC)[11603010] ; National Science Foundation of China (NSFC)[11690024] ; National Science Foundation of China (NSFC)[U1531118] ; National Science Foundation of China (NSFC)[11603035] ; National Science Foundation of China (NSFC)[11733009] ; National Science Foundation of China (NSFC)[11325313/11633002] ; National Key Research and Development Program of China (NKRDPC)[2019YFA0405504] ; National Key Research and Development Program of China (NKRDPC)[2016YFA0400804] ; National Key Research and Development Program of China (NKRDPC)[2016YFA0400803] ; National Key Research and Development Program of China (NKRDPC)[2016YFA0400704] ; Spanish Ministry of Economy, Industry and Competitiveness (MINECO)[AYA2017-83216-P] ; Polish National Science Center (NCN)[2015/19/B/ST9/01099] ; Polish National Science Center (NCN)[2018/30/A/ST9/00050] ; National Development and Reform Commission ; W.M. Keck Foundation
WOS Research AreaScience & Technology - Other Topics
Language英语
PublisherNATURE PUBLISHING GROUP
WOS IDWOS:000500036800050
Funding OrganizationNational Science Foundation of China (NSFC)[11988101/11425313, 11773015/11333004/U1838201, 11603010, 11690024, U1531118, 11603035, 11733009, 11325313/11633002] ; National Key Research and Development Program of China (NKRDPC)[2019YFA0405504, 2016YFA0400804, 2016YFA04008, 2016YFA0400704] ; Spanish Ministry of Economy, Industry and Competitiveness (MINECO)[AYA2017-83216-P] ; Polish National Science Center (NCN)[2015/19/B/ST9/01099, 2018/30/A/ST9/00050] ; National Development and Reform Commission ; W.M. Keck Foundation
源URL[http://ir.ynao.ac.cn/handle/114a53/21758]  
Collection云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
Corresponding AuthorLiu, Jifeng; Zhang, Haotong
Affiliation1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China
2.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China
3.WHU-NAOC Joint Center for Astronomy, Wuhan University, Wuhan, China
4.Department of Astronomy, Caltech, Pasadena, CA, USA
5.Sydney Institute for Astronomy, The University of Sydney, Sydney, New South Wales, Australia
6.The Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam, The Netherlands
7.School of Astronomy and Space Science, Nanjing University, Nanjing, China
8.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, China
9.Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
10.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, China
Recommended Citation
GB/T 7714
Liu, Jifeng,Zhang, Haotong,Howard, Andrew W.,et al. A wide star-black-hole binary system from radial-velocity measurements[J]. NATURE,2019,575(7784):618-+.
APA Liu, Jifeng.,Zhang, Haotong.,Howard, Andrew W..,Bai, Zhongrui.,Lu, Youjun.,...&Cui, Xiangqun.(2019).A wide star-black-hole binary system from radial-velocity measurements.NATURE,575(7784),618-+.
MLA Liu, Jifeng,et al."A wide star-black-hole binary system from radial-velocity measurements".NATURE 575.7784(2019):618-+.

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来源:云南天文台

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