155 citations · 938 across the 39 of their papers we have counts for
41 papers
Matter accretion in metal-poor stars down to extremely metal-poor stars and the lithium problem
M. Deal, O. Richard, S. Vauclair
The formation and evolution of light elements in the Universe act as important cosmological constraints. It has long been assumed that the oldest stars of the Galaxy display the pr…
He white dwarfs with large H contamination: Convective mixing or accretion?
F. C. Wachlin, G. Vauclair, S. Vauclair
White dwarfs are compact objects with atmospheres containing mainly light elements, hydrogen or helium. Because of their surface high gravitational field, heavy elements diffuse do…
Effect of diffusion-induced element accumulation on the opacity inside B stars
Alain Hui-Bon-Hoa, Sylvie Vauclair
Stellar models with homogeneous abundances fail to reproduce the pulsation frequencies of early B-type stars. Their oscillations are excited by kappa-mechanism involving the Fe-pea…
Accretion of planetary matter and the lithium problem in the 16 Cygni stellar system
Morgan Deal, Olivier Richard, Sylvie Vauclair
The 16 Cyg system is composed of two solar analogs with similar masses and ages. A red dwarf is in orbit around 16 Cyg A whereas 16 Cyg B hosts a giant planet. The abundances of he…
Fingering Convection in Red Giants Revisited
F. C. Wachlin, S. Vauclair, L. G. Althaus
Fingering (thermohaline) convection has been invoked for several years as a possible extra-mixing which could occur in Red Giant stars due to the modification of the chemical compo…
Fingering convection induced by atomic diffusion in stars: 3D numerical computations and applications to stellar models
Varvara Zemskova, Pascale Garaud, Morgan Deal +1
Iron-rich layers are known to form in the stellar subsurface through a combination of gravitational settling and radiative levitation. Their presence, nature and detailed structure…