A wide star–black-hole binary system from radial-velocity measurements
文献类型:期刊论文
作者 | Liu, 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 |
刊名 | Nature |
出版日期 | 2019-11-28 |
卷号 | 575期号:7784页码:618-621 |
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 | Journal article (JA) |
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 Sun1–4. Theory predicts, however, that X-ray-emitting systems form a minority of the total population of star–black-hole binaries5,6. 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 Hα emission line require the presence of a dark companion with a mass of 68−13+11 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 ; 恒星物理学 ; 恒星天文学 |
URL标识 | 查看原文 |
资助项目 | National Science Foundation of China (NSFC)[11988101] ; National Science Foundation of China (NSFC)[11425313] ; National Science Foundation of China (NSFC)[11773015] ; National Science Foundation of China (NSFC)[11333004] ; National Science Foundation of China (NSFC)[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] ; National Science Foundation of China (NSFC)[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] |
语种 | 英语 |
出版者 | Nature Research |
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, 2016YFA0400803, 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] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/21544] |
专题 | 云南天文台_大样本恒星演化研究组 云南天文台_丽江天文观测站(南方基地) 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Liu, Jifeng |
作者单位 | 1.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, United States 5.Sydney Institute for Astronomy, The University of Sydney, Sydney; NSW, Australia 6.The Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam, 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, United States 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):618-621. |
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),618-621. |
MLA | Liu, Jifeng,et al."A wide star–black-hole binary system from radial-velocity measurements".Nature 575.7784(2019):618-621. |
入库方式: OAI收割
来源:云南天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。