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Hunting for massive binaries with a black-hole component using Gaia data

Published online by Cambridge University Press:  29 August 2024

Soetkin Janssens Open the ORCID record for Soetkin Janssens [Opens in a new window] ,
T. Shenar Open the ORCID record for T. Shenar [Opens in a new window] ,
H. Sana Open the ORCID record for H. Sana [Opens in a new window] ,
S. Faigler ,
N. Langer Open the ORCID record for N. Langer [Opens in a new window] ,
P. Marchant ,
T. Mazeh ,
C. Schürmann Open the ORCID record for C. Schürmann [Opens in a new window]  and
S. Shahaf
Soetkin Janssens*
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
T. Shenar
Affiliation:
Anton Pannekoek Institute for Astronomy, Science Park 904, 1098 XH, Amsterdam, The Netherlands
H. Sana
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
S. Faigler
Affiliation:
School of Physics and Astronomy, Tel Aviv University, Tel Aviv 6997801, Israel
N. Langer
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
P. Marchant
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
T. Mazeh
Affiliation:
School of Physics and Astronomy, Tel Aviv University, Tel Aviv 6997801, Israel
C. Schürmann
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
S. Shahaf
Affiliation:
Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 7610001, Israel
*
email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

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With the upcoming third Gaia data release (DR3), the first Gaia astrometric orbital solutions for binary sources will become available. Potentially, many rarely seen single-degenerate massive binaries with a black hole (OB+BH) will be revealed. Here, we investigate how many OB+BHs are expected to be detected as binaries in Gaia astrometry by using tailored models for the massive star population. We use a method based on the astrometric data to investigate how many OB+BH binaries will be uncovered by Gaia. We estimate that∼200 OB+BHs are detectable among the sources in the second Alma Luminous Star massive star catalogue, either in DR3 or in upcoming data releases. Moreover, we show that BH-formation scenarios could be constrained from the distributions of parameters such as the orbital periods and eccentricities.

Keywords

black hole physicsbinaries:generalastrometrystars:statistics
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 313 - 315
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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