A wide star-black-hole binary system from radial-velocity measurements | |
Liu, Jifeng1,3,4; Zhang, Haotong4; Howard, Andrew W.2; Bai, Zhongrui4; Lu, Youjun3,4; Soria, Roberto3,5; Justham, Stephen3,4,6; Li, Xiangdong7,8; Zheng, Zheng9; Wang, Tinggui10 | |
刊名 | NATURE |
2019-11-28 | |
卷号 | 575期号:7784页码:618-+ |
ISSN号 | 0028-0836 |
DOI | 10.1038/s41586-019-1766-2 |
产权排序 | 第26完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 恒星与银河系 |
URL标识 | 查看原文 |
出版地 | MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND |
资助项目 | National 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关键词 | BLANKETED MODEL ATMOSPHERES ; X-RAY BINARIES ; M-CIRCLE-DOT ; STELLAR EVOLUTION ; FUNDAMENTAL PLANE ; ACCRETION FLOWS ; MASS ; EMISSION ; ISOCHRONES ; SPECTRUM |
WOS研究方向 | Science & Technology - Other Topics |
语种 | 英语 |
出版者 | NATURE PUBLISHING GROUP |
WOS记录号 | WOS:000500036800050 |
资助机构 | National 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 |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/21758] |
专题 | 云南天文台_大样本恒星演化研究组 |
通讯作者 | Liu, Jifeng; Zhang, Haotong |
作者单位 | 1.WHU-NAOC Joint Center for Astronomy, Wuhan University, Wuhan, China 2.Department of Astronomy, Caltech, Pasadena, CA, USA 3.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China 4.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China 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 |
推荐引用方式 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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