Publications (13)
Analysis of alpha Centauri AB including seismic constraints
P. Eggenberger, C. Charbonnel, S. Talon +4
Detailed models of alpha Cen A and B based on new seismological data for alpha Cen B by Carrier & Bourban (2003) have been computed using the Geneva evolution code including atomic…
The magnetism of the solar interior for a complete MHD solar vision
S. Turck-Chieze, T. Appourchaux, J. Ballot +37
The solar magnetism is no more considered as a purely superficial phenomenon. The SoHO community has shown that the length of the solar cycle depends on the transition region betwe…
Dynamical processes in the solar radiative interior
A. Palacios, S. Talon, S. Turck-Chieze +1
Recent seismic observations coming from acoustic and gravity modes clearly show that the solar standard model has reached its limits and can no longer be used to interpret satisfac…
Seismic diagnostics for transport of angular momentum in stars 1. Rotational splittings from the PMS to the RGB
J. P. Marques, M. J. Goupil, Y. Lebreton +12
Rotational splittings are currently measured for several main sequence stars and a large number of red giants with the space mission Kepler. This will provide stringent constraints…
Diagnoses to unravel secular hydrodynamical processes in rotating main sequence stars
T. Decressin, S. Mathis, A. Palacios +4
(Abridged) We present a detailed analysis of the main physical processes responsible for the transport of angular momentum and chemical species in the radiative regions of rotating…
Solar-like oscillations in a massive star
K. Belkacem, R. Samadi, M. -J. Goupil +15
Seismology of stars provides insight into the physical mechanisms taking place in their interior, with modes of oscillation probing different layers. Low-amplitude acoustic oscilla…
Rotation-induced mixing in red giant stars
A. Palacios, C. Charbonnel, S. Talon +1
Red giant stars, both in the field and in globular clusters, present abundance anomalies that can not be explained by standard stellar evolution models. Some of these peculiarities…
The Li dip : a probe of angular momentum transport in low mass stars
S. Talon, C. Charbonnel
We use the measures of Li and rotational velocities in F Hyades stars to assess the role of the wind-driven meridian circulation and of shear turbulence in the transport of angular…
Impact of internal gravity waves on the rotation profile inside pre-main sequence low-mass stars
C. Charbonnel, T. Decressin, L. Amard +2
We study the impact of internal gravity waves (IGW), meridional circulation, shear turbulence, and stellar contraction on the internal rotation profile and surface velocity evoluti…
Rotational mixing in low-mass stars II. Self-consistent models of Pop II RGB stars
A. Palacios, C. Charbonnel, S. Talon +1
In this paper we study the effects of rotation in low-mass, low-metallicity RGB stars. We present the first evolutionary models taking into account self-consistently the latest pre…
Effects of rotational mixing on the asteroseismic properties of solar-type stars
P. Eggenberger, G. Meynet, A. Maeder +6
The influence of rotational mixing on the evolution and asteroseismic properties of solar-type stars is studied. Rotational mixing changes the global properties of a solar-type sta…
Anisotropic diffusion and shear instabilities
S. Talon, J. -P. Zahn
We examine the role of anisotropic turbulence on the shear instabilities in a stratified flow. Such turbulence is expected to occur in the radiative interiors of stars, due to thei…
Hydrodynamical stellar models including rotation, internal gravity waves and atomic diffusion. I. Formalism and tests on Pop I dwarfs
S. Talon, C. Charbonnel
In this paper, we develop a formalism in order to incorporate the contribution of internal gravity waves to the transport of angular momentum and chemicals over long time-scales in…