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Microscopic Diffusion in Stellar Evolution Codes: First Comparisons Results of ESTA-Task 3

Published online by Cambridge University Press:  20 June 2007

C.W. Straka ,
Y. Lebreton ,
M.J.P.F.G. Monteiro ,
Y. Lebreton ,
J. Montalbán ,
J. Christensen-Dalsgaard ,
S. Théado ,
A. Hui-Bon-Hoa ,
M. J.P.F.G. Monteiro  and
S. Degl'Innocenti
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Y. Lebreton
Affiliation:
Observatoire de Paris, GEPI, CNRS UMR 8111, Meudon, France
J. Montalbán
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, Belgique
J. Christensen-Dalsgaard
Affiliation:
Institut for Fysik og Astronomi, Aarhus Universitet, Denmark
S. Théado
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, Belgique
A. Hui-Bon-Hoa
Affiliation:
LATT, Observatoire de Midi-Pyrénées, CNRS UMR 5572, Toulouse, France
M. J.P.F.G. Monteiro
Affiliation:
Centro de Astrofísica da Universidade do Porto, Portugal and Departamento de Matemática Aplicada, Faculdade de Ciências da Univ ersidade do Porto, Portugal
S. Degl'Innocenti
Affiliation:
Dipartimento di Fisica, Università di Pisa, Italy
M. Marconi
Affiliation:
INAF-Osservatorio Astronomico di Capodimonte, Napoli, Italy
P. Morel
Affiliation:
Observatoire de la Côte d'Azur, Cassiopée, CNRS UMR 6202, Nice, France
P.G. Prada Moroni
Affiliation:
Dipartimento di Fisica, Università di Pisa, Italy
A. Weiss
Affiliation:
Max-Planck-Institut für Astrophysik, Garching, Germany
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Abstract

We present recent work undertaken by the Evolution and Seismic Tools Activity (ESTA) team of the CoRoT Seismology Working Group. The new ESTA-Task 3 aims at testing, comparing and optimising stellar evolution codes which include microscopic diffusion of the chemical elements resulting from pressure, temperature and concentration gradients. The results already obtained are globally satisfactory, but some differences between the different numerical tools appear that require further investigations.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 26: Stellar Evolution and Seismic Tools for Asteroseismology - Diffusive Processes in Stars and Seismic Analysis , 2007 , pp. 155 - 165
Copyright
© EAS, EDP Sciences, 2007

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