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CoRoT/ESTA–TASK 1 and TASK 3 comparison of the internal structure and seismic properties of representative stellar models |
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| Authors: | Yveline Lebreton Josefina Montalbán Jørgen Christensen-Dalsgaard Ian W Roxburgh Achim Weiss |
| Institution: | 1. GEPI, Observatoire de Paris, CNRS, Université Paris Diderot, 5 Place Janssen, 92195, Meudon, France 2. Institut d’Astrophysique et Géophysique, Université de Liège, Liège, Belgium 3. Institut for Fysik og Astronomi, Aarhus Universitet, Aarhus, Denmark 4. Queen Mary University of London, London, England 5. LESIA, Observatoire de Paris, Meudon, France 6. Max-Planck-Institut für Astrophysik, Garching, Germany |
| Abstract: | We compare stellar models produced by different stellar evolution codes for the CoRoT/ESTA project, comparing their global quantities, their physical structure, and their oscillation properties. We discuss the differences between models and identify the underlying reasons for these differences. The stellar models are representative of potential CoRoT targets. Overall we find very good agreement between the five different codes, but with some significant deviations. We find noticeable discrepancies (though still at the per cent level) that result from the handling of the equation of state, of the opacities and of the convective boundaries. The results of our work will be helpful in interpreting future asteroseismology results from CoRoT. |
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