FICOT, A.; REYLÉ, C.; LAGARDE, Nadège; SMART, R. L.; BURGASSER, A. J.

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Licence d’utilisation du document

LAGARDE, Nadège
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
Univers, Théorie, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) [UTINAM]

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Communication dans un congrès

Ce document a été publié dans

SF2A-2021: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics., SF2A-2021: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics., SF2A-2021: Annual meeting of the French Society of Astronomy and Astrophysics., 2021-06-07, En ligne. 2021-12

Résumé en anglais

Ultra-cool dwarfs (spectral type later than M7) serve as a link between stars and brown dwarfs which have not a sufficient mass to support the combustion of hydrogen. Although they are numerous in the Galaxy, they remain elusive due to their low luminosity and the modelling is still a chalenge. In this work we characterized 120 ultra-cool dwarfs revealed by Gaia for which spectroscopic monitoring have been obtained using various instruments of medium spectral resolution. Our results illustrate the impact of physics considered in atmospheric models on the characterization of these objects.< Réduire

Mots clés en anglais

stars: low-mass

ultra-cool dwarfs

brown dwarfs

spectroscopy

Origine

Importé de hal

Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804