• DOI:10.1051/0004-6361/202038020
Corpus ID: 218516688

A naked-eye triple system with a nonaccreting black hole in the inner binary

@article{Rivinius2020ANT,
  title={A naked-eye triple system with a nonaccreting black hole in the inner binary},
  author={T. Rivinius and D. Baade and P. Hadrava and M. Heida and R. Klement},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2020}
}

• T. Rivinius, D. Baade, +2 authors R. Klement
• Published 2020
• Physics
• arXiv: Solar and Stellar Astrophysics

Several dozen optical echelle spectra demonstrate that HR 6819 is a hierarchical triple. A classical Be star is in a wide orbit with an unconstrained period around an inner 40 d binary consisting of a B3 III star and an unseen companion in a circular orbit. The radial-velocity semi-amplitude of 61.3 km/s of the inner star and its minimum (probable) mass of 5.0 Msun (6.3 +- 0.7 Msun) imply a mass of the unseen object of >= 4.2 Msun (>= 5.0 +- 0.4 Msun), that is, a black hole (BH). The… Expand

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