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HR 6819 – a post-interaction binary system originally thought to be a triple system containing a black hole

Published online by Cambridge University Press:  29 August 2024

Abigail J. Frost Open the ORCID record for Abigail J. Frost [Opens in a new window] ,
Julia Bodensteiner Open the ORCID record for Julia Bodensteiner [Opens in a new window] ,
Thomas Rivinius Open the ORCID record for Thomas Rivinius [Opens in a new window] ,
Dietrich Baade Open the ORCID record for Dietrich Baade [Opens in a new window] ,
Antoine Merand ,
Fernando Selman ,
Michael Abdul-Masih Open the ORCID record for Michael Abdul-Masih [Opens in a new window] ,
Gareth Banyard ,
Emma Bordier Open the ORCID record for Emma Bordier [Opens in a new window]  and
Karan Dsilva
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Abigail J. Frost*
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
Julia Bodensteiner
Affiliation:
European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany
Thomas Rivinius
Affiliation:
European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Casilla 19001, Santiago 19, Chile
Dietrich Baade
Affiliation:
European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany
Antoine Merand
Affiliation:
European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany
Fernando Selman
Affiliation:
European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Casilla 19001, Santiago 19, Chile
Michael Abdul-Masih
Affiliation:
European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Casilla 19001, Santiago 19, Chile
Gareth Banyard
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
Emma Bordier
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Casilla 19001, Santiago 19, Chile
Karan Dsilva
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
Calum Hawcroft
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
Laurent Mahy
Affiliation:
Royal Observatory of Belgium, Avenue Circulaire 3, B-1180 Brussel, Belgium
Maddalena Reggiani
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
Tomer Shenar
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Postbus 94249, 1090 GE Amsterdam, The Netherlands
Mauricio Cabezas
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, Boční II 1401, 141 31 Praha 4, Czech Republic
Petr Hadrava
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, Boční II 1401, 141 31 Praha 4, Czech Republic
Marianne Heida
Affiliation:
European Organisation for Astronomical Research in the Southern Hemisphere (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany
Robert Klement
Affiliation:
The CHARA Array of Georgia State University, Mount Wilson Observatory, Mount Wilson, CA 91023, USA
Hugues Sana
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
*
email: abi.frost@kuleuven.be
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Abstract

In 2020, HR 6819 was reported to be a triple system containing the closest black hole to Earth. However, these results were contested, with an alternative explanation of a post-interaction binary suggested. Using new integral field spectroscopic and interferometric data, we have been able to determine the true nature of this exotic source.

Keywords

stars: early-typestars: binariesstars: fundamental parameters
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 307 - 310
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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References

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