Your browser doesn't support javascript.
loading
A wide star-black-hole binary system from radial-velocity measurements.
Liu, Jifeng; Zhang, Haotong; Howard, Andrew W; Bai, Zhongrui; Lu, Youjun; Soria, Roberto; Justham, Stephen; Li, Xiangdong; Zheng, Zheng; Wang, Tinggui; Belczynski, Krzysztof; Casares, Jorge; Zhang, Wei; Yuan, Hailong; Dong, Yiqiao; Lei, Yajuan; Isaacson, Howard; Wang, Song; Bai, Yu; Shao, Yong; Gao, Qing; Wang, Yilun; Niu, Zexi; Cui, Kaiming; Zheng, Chuanjie; Mu, Xiaoyong; Zhang, Lan; Wang, Wei; Heger, Alexander; Qi, Zhaoxiang; Liao, Shilong; Lattanzi, Mario; Gu, Wei-Min; Wang, Junfeng; Wu, Jianfeng; Shao, Lijing; Shen, Rongfeng; Wang, Xiaofeng; Bregman, Joel; Di Stefano, Rosanne; Liu, Qingzhong; Han, Zhanwen; Zhang, Tianmeng; Wang, Huijuan; Ren, Juanjuan; Zhang, Junbo; Zhang, Jujia; Wang, Xiaoli; Cabrera-Lavers, Antonio; Corradi, Romano.
Affiliation
  • Liu J; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China. jfliu@nao.cas.cn.
  • Zhang H; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China. jfliu@nao.cas.cn.
  • Howard AW; WHU-NAOC Joint Center for Astronomy, Wuhan University, Wuhan, China. jfliu@nao.cas.cn.
  • Bai Z; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China. htzhang@bao.ac.cn.
  • Lu Y; Department of Astronomy, Caltech, Pasadena, CA, USA.
  • Soria R; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Justham S; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Li X; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Zheng Z; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Wang T; Sydney Institute for Astronomy, The University of Sydney, Sydney, New South Wales, Australia.
  • Belczynski K; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Casares J; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Zhang W; The Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam, The Netherlands.
  • Yuan H; School of Astronomy and Space Science, Nanjing University, Nanjing, China.
  • Dong Y; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, China.
  • Lei Y; Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA.
  • Isaacson H; CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, China.
  • Wang S; Nicolaus Copernicus Astronomical Centre, Polish Academy of Sciences, Warsaw, Poland.
  • Bai Y; Instituto de Astrofísica de Canarias, La Laguna, Spain.
  • Shao Y; Departamento de Astrofísica, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.
  • Gao Q; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Wang Y; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Niu Z; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Cui K; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Zheng C; Astronomy Department, University of California, Berkeley, CA, USA.
  • Mu X; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Zhang L; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Wang W; School of Astronomy and Space Science, Nanjing University, Nanjing, China.
  • Heger A; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, China.
  • Qi Z; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Liao S; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Lattanzi M; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Gu WM; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Wang J; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Wu J; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Shao L; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Shen R; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Wang X; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Bregman J; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing, China.
  • Di Stefano R; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Liu Q; WHU-NAOC Joint Center for Astronomy, Wuhan University, Wuhan, China.
  • Han Z; School of Physics and Technology, Wuhan University, Wuhan, China.
  • Zhang T; Monash Centre for Astrophysics, School of Physics and Astronomy, Monash University, Victoria, Australia.
  • Wang H; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China.
  • Ren J; Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, China.
  • Zhang J; Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, China.
  • Zhang J; INAF-Osservatorio Astrofisico di Torino, Pino Torinese, Italy.
  • Wang X; Department of Astronomy, Xiamen University, Xiamen, China.
  • Cabrera-Lavers A; Department of Astronomy, Xiamen University, Xiamen, China.
  • Corradi R; Department of Astronomy, Xiamen University, Xiamen, China.
Nature ; 575(7784): 618-621, 2019 11.
Article in En | MEDLINE | ID: mdl-31776491
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 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 [Formula see text] 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.
Fulltext
Print
XML
PubMed Links
Search on Google

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nature Year: 2019 Type: Article Affiliation country: China
Fulltext
Print
XML
PubMed Links
Search on Google

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nature Year: 2019 Type: Article Affiliation country: China