Vauclair, Sylvie, Theado, Sylvie
Asteroseismology is found to be a excellent tool for detecting diffusion-induced helium gradients inside main-sequence A stars. Models have been computed for 1.6 and 2.0 M$_{\odot}$ stars with pure...
Theado, Sylvie, Vauclair, Sylvie
In the first paper of this series, we discussed analytically, in an approximate way, the mixing processes which occur in slowly rotating stars when the feed-back effects due to the diffusion-induced...
Vauclair, Sylvie, Theado, Sylvie
In the presence of rotation-induced mixing, element diffusion still occurs in stellar radiative zones, although at a slower rate than in the case of a complete stability of the stellar gas. As a...
Theado, Sylvie, Vauclair, Sylvie
In the two previous papers of this series, we have discussed the importance of t he $\mu$-gradients due to helium settling on rotation-induced mixing, first in a n approximate analytical way, second...
Theado, Sylvie, Vauclair, Sylvie
The lithium plateau observed in halo stars has long appeared as a paradox in the general context of the lithium abundance behavior in stellar outer layers. First, the plateau is flat, second, the...
Theado, Sylvie, Vauclair, Sylvie
It has been known for a long time (Mestel~1953) that the meridional circulation velocity in stars, in the presence of mu-gradients, is the sum of two terms, one due to the classical thermal imbalance...
Lithium abundances in main-sequence F stars and sub-giants (2000)
Nascimento Jr, Jose Dias Do, Theado, Sylvie, Vauclair, Sylvie
The application to main-sequence stars of the rotation-induced mixing theory in the presence of mu-gradients leads to partial mixing in the lithium destruction region, not visible in the atmosphere....