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The impact of binary interaction on the main-sequence morphology of young star clusters

Published online by Cambridge University Press:  29 August 2024

Chen Wang Open the ORCID record for Chen Wang [Opens in a new window] ,
Norbert Langer ,
Abel Schootemeijer Open the ORCID record for Abel Schootemeijer [Opens in a new window] ,
Antonino Milone Open the ORCID record for Antonino Milone [Opens in a new window] ,
Ben Hastings ,
Xiao-Tian Xu ,
Julia Bodensteiner Open the ORCID record for Julia Bodensteiner [Opens in a new window] ,
Hugues Sana Open the ORCID record for Hugues Sana [Opens in a new window] ,
Norberto Castro  and
D. J. Lennon
...Show all authors
Chen Wang*
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, 85748 Garching, Germany
Norbert 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
Abel Schootemeijer
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Antonino Milone
Affiliation:
Dipartimento di Fisica e Astronomia “Galileo Galilei”, Univ. di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy
Ben Hastings
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
Xiao-Tian Xu
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
Julia Bodensteiner
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
Hugues Sana
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
Norberto Castro
Affiliation:
Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany
D. J. Lennon
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain Dpto. Astrofísica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain
Pablo Marchant
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium
A. de Koter
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnlaan 200D, 3001 Leuven, Belgium Astronomical Institute “Anton Pannekoek”, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
Selma E. de Mink
Affiliation:
Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, 85748 Garching, Germany Astronomical Institute “Anton Pannekoek”, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands Center for Astrophysics, Harvard-Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
*
email: [email protected]
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Abstract

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Since massive stars form preferentially as members of close binary systems, we use dense grids of detailed binary evolution models to explore how binary evolution shapes the main-sequence morphology of young star clusters. We propose that binary mergers might be the origin of the blue main sequence stars in young star clusters. Our results imply that stars may either form by accretion, or through a binary merger, and that both paths lead to distinctly different spins, magnetic fields, and stellar mass distributions.

Keywords

stars: early-typestars: binariesHertzsprung-Russell diagram
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 286 - 291
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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