5 papers
Revealing mixed modes in compressible hydrodynamical simulations of red giant stars
Nils B. de Vries, Arthur Le Saux, Isabelle Baraffe +4
Mixed modes are observed in many low-mass evolved stars. They provide information about core rotation rates of these stars, which are lower than predicted by stellar evolution mode…
Unveiling stellar (and planetary) internal dynamics with the fully compressible MUSIC code
Arthur Le Saux, Isabelle Baraffe, Thomas Guillet +8
Multidimensional hydrodynamical simulations have transformed the study of stellar interiors over the past few decades. Most codes developed during that time use the anelastic appro…
Mass dependence of overshooting beneath convective envelopes
J. Pratt, I. Baraffe, M. -G. Dethero +3
Although the dependence of convective core overshooting on mass has attracted much attention, no corresponding work exists for overshooting below a convective envelope. We aim to q…
Convective shells in the interior of Cepheid variable stars: overshooting models based on hydrodynamic simulations
Maxime Stuck, Jane Pratt, Isabelle Baraffe +5
Because Cepheid variable stars have long been used as a cosmic benchmark, the accuracy of stellar evolution models for Cepheids have wide-reaching effects. Our goal is to provide a…
Mixing by Internal Gravity Waves in Stars: Assessing Numerical Simulations Against Theory
Jack Morton, Thomas Guillet, Isabelle Baraffe +5
Here we present a study of radial chemical mixing in non-rotating massive main-sequence stars driven by internal gravity waves (IGWs), based on multi-dimensional hydrodynamical sim…