Giant planets population around B stars from the first part of the BEAST survey
P. Delorme, A. Chomez, V. Squicciarini, M. Janson, O. Flasseur, O., Schib, R. Gratton, A-M. Lagrange, M. Langlois, L. Mayer, R. Helled, S, Re\"iffert, F. Kiefer, B. Biller, G. Chauvin, C. Fontanive, Th. Henning, M., Kenworthy, G-D. Marleau, D. Mesa, M. R. Meyer, C. Mordasini

TL;DR
This study investigates the frequency of giant planets around young B-stars using direct imaging data from the BEAST survey, finding a similar occurrence rate to solar-type stars but with different companion characteristics.
Contribution
It provides the first systematic search for massive exoplanets around B-stars in the Sco-Cen association and estimates their occurrence rate, highlighting potential differences in companion properties.
Findings
Detected a 11-5+7% occurrence rate of giant planets around B-stars.
Found that B-star companions have low mass ratios and larger semi-major axes.
Suggests giant planet frequency around B-stars is similar to that around solar-type stars.
Abstract
Exoplanets form from circumstellar protoplanetary discs whose fundamental properties (notably their extent, composition, mass, temperature and lifetime) depend on the host star properties, such as their mass and luminosity. B-stars are among the most massive stars and their protoplanetary discs test extreme conditions for exoplanet formation. This paper investigates the frequency of giant planet companions around young B-stars (median age of 16 Myr) in the Scorpius-Centaurus association, the closest association containing a large population of B-stars. We systematically search for massive exoplanets with the high-contrast direct imaging instrument SPHERE using the data from the BEAST survey, that targets an homogeneous sample of young B-stars from the wide Sco-Cen association. We derive accurate detection limits in case of non-detections. We found evidence in previous papers for two…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAstronomy and Astrophysical Research · Stellar, planetary, and galactic studies · Astro and Planetary Science
