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Phase-space averaging for stellar convection I. Liouvillian dynamics
P. S. Houdayer, M. Rieutord
Convection remains one of the main uncertain links between multidimensional hydrodynamics and one-dimensional stellar evolution. In particular, transition regions such as near-surf…
Phase-space averaging for stellar convection II. Maximum-entropy closures for mixed radiative-convective envelopes
P. S. Houdayer, M. Rieutord
Surface convection in cool stars sets the entropy jump between the atmosphere and the deep convective envelope, and therefore affects the radius and structure of one-dimensional st…
Kelvin waves over a differentially rotating spherical shell
T. Boismard, M. Rieutord
Context. Be stars are presently viewed as B-type stars surrounded by a disc fueled by the star itself during episodicexcretion events. The origin of these events are poorly underst…
Fundamental properties of two rapidly rotating stars: Rasalhague and Alkaid
Axel Lazzarotto, Alain Hui-Bon-Hoa, Torsten Boehm +2
Abridged : The fundamental parameters of rapidly rotating stars are key quantities to understand the impact of rotation on stellar evolution. A few nearby early-type stars offer th…
Angular momentum relaxation in models of rotating early-type stars
Michel Rieutord, Enzo Enzo Brossier-Sécher, Joey Mombarg
The rotational evolution of stars is still an open question of stellar physics because of the numerous phenomena that can contribute to the distribution of angular momentum. This p…
Coriolis darkening in late-type stars II. Effect of self-sustained magnetic fields in stratified convective envelope
C. Pinçon, L. Petitdemange, R. Raynaud +4
Modeling the surface brightness distribution of stars is of prime importance to interpret observations. Nevertheless, this remains quite challenging for cool stars as it requires o…