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Accueil > Séminaires > Archive des séminaires d’Utinam > 2018

Louis Amard

Rotational evolution of low-mass stars

mardi 11 septembre 2018, 14h

salle de conférences de l’observatoire


College of Engineering, Mathematics and Physical sciences, Université d’Exeter, Royaume-Uni

Mots-clés :
Astrophysique, physique stellaire, étoiles : évolution, rotation et métallicité

Résumé :

The angular momentum of young low-mass stars is a long-standing problem that has, so far, not been solved. Why is the Sun spinning so slowly while its initial contraction should have left him with a rotation period smaller than a day ? Or in other words, how did the Sun lost all its angular momentum since its formation ? The answer likely involves several physical processes all along the life of the star.
In this talk, I aim at presenting you the most recent results regarding the rotational evolution of low-mass stars. I will specifically focus on solar-type stars constituted of a radiative core surrounded by a consequent convective envelope. I will detailed the different processes playing a role in the rotational evolution and how recent (or forthcoming) spatial photometric observations can help to constraint them.