Document Stellar Evolution and Seismic Tools for Asteroseismology - Diffusive Processes in Stars and Seismic Analysis
C.W. Straka, Y. Lebreton and M.J.P.F.G. Monteiro (eds)
EAS Publications Series, 26 (2007) 167-176
DOI: 10.1051/eas:2007135
Comparisons for ESTA-Task3: CLES and CESAM
J. Montalbán1, S. Théado1 and Y. Lebreton21 Institut d'Astrophysique et Geophysique, Université de Liège, Belgique
2 Observatoire de Paris-Meudon, GEPI, France
(Published online: 20 June 2007)
Abstract
We present the results of comparing three different implementations of
the microscopic diffusion process in the stellar evolution codes CESAM and
CLES. For each of these implementations we computed models of 1.0,
1.2 and 1.3 
. We analyse the differences in their internal structure
at three selected evolutionary stages, as well as the variations of
helium abundance and depth of the stellar convective envelope. The origin of
these differences and their effects on the seismic properties of the
models are also considered.
© EAS, EDP Sciences 2007