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Massive stars and their large-separation low-mass companions in Sco OB1

Published online by Cambridge University Press:  29 August 2024

T. Pauwels Open the ORCID record for T. Pauwels [Opens in a new window] ,
M. Reggiani ,
A. Rainot Open the ORCID record for A. Rainot [Opens in a new window]  and
H. Sana Open the ORCID record for H. Sana [Opens in a new window]
T. Pauwels*
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
M. Reggiani
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
A. Rainot
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
H. Sana
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
*
email: tinne.pauwels@kuleuven.be
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Abstract

Exploring the low-mass end of the companion mass function around massive stars is of crucial importance to constrain massive star formation theories. We present a high-contrast imaging study of 20 O- and early B-type stars in the Scorpius OB1 association. From the analysis of VLT/SPHERE data, we identify a total of 789 sources. The data probe the brown dwarf regime around massive stars, resulting in the discovery of large-separation multiple systems with mass-ratios as low as 0.001 (comparable to Jupiter-Sun mass-ratio).

Keywords

stars: early-typestars: low-massbrown dwarfsbinaries: generalstars: formation
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 326 - 328
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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