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Thibault Merle

Dancing with the Stars: a Review on Stellar Multiplicity

(Volume 93 - Année 2024 — No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation)
DOI: 10.25518/0037-9565.11641
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Abstract

Stars like company. They are mostly formed in clusters and their lives are often altered by the presence of one or more companions. Interaction processes between components may lead to complex outcomes like Algols, blue stragglers, chemically altered stars, type Ia supernovae, as well as progenitors of gravitational wave sources, to cite a few. Observational astronomy has entered the era of big data, and thanks to large surveys like spatial missions Kepler, TESS, Gaia, and ground-based spectroscopic surveys like RAVE, Gaia-ESO, APOGEE, LAMOST, GALAH (to name a few) the field is going through a true revolution, as illustrated by the recent detection of stellar black holes and neutron stars as companions of massive but also low-mass stars. In this review, I will present why it is important to care about stellar multiples, what are the main large surveys in which many binaries are harvested, and finally present some features related to the largest catalogue of astrometric, spectroscopic and eclipsing binaries provided by the Non-Single Star catalogue of Gaia, which is, to date, the largest homogeneous catalogue of stellar binaries.

Keywords : binary stars, stellar multiplicity, spectroscopic binaries, eclipsing binaries, astrometric binaries

To cite this article

Thibault Merle, «Dancing with the Stars: a Review on Stellar Multiplicity», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 170-214 URL : http://popups.ulg.be/0037-9565/index.php?id=11641.

About: Thibault Merle

Royal Observatory of Belgium, Avenue Circulaire 3, 1180 Brussels, Belgium and Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, CP 226 Boulevard du Triomphe, 1050 Bruxelles, Belgium. Correspondence to: thibault.merle@oma.be