The hidden companion in LB-1 unveiled by spectral disentangling

  title={The hidden companion in LB-1 unveiled by spectral disentangling},
  author={T. Shenar and J. Bodensteiner and M. Abdul-Masih and M. Fabry and L. Mahy and P. Marchant and G. Banyard and D. M. Bowman and K. Dsilva and C. Hawcroft and M. Reggiani and H. Sana},
  journal={arXiv: Solar and Stellar Astrophysics},
  • T. Shenar, J. Bodensteiner, +9 authors H. Sana
  • Published 2020
  • Physics
  • arXiv: Solar and Stellar Astrophysics
  • The intriguing binary LS V + 22 25 (LB-1) drew much attention after being claimed to be a 79-day binary comprising a B-type star orbiting a ~70Ms black hole - the most massive stellar black hole reported to date. Subsequent studies showed that evidence for such a large companion mass is lacking. Recent analyses implied that the primary star is a stripped, He-rich star with peculiar sub-solar abundances of heavy elements such as Mg and Fe. However, the nature of the secondary, which was proposed… CONTINUE READING

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