Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010an....331..956b&link_type=abstract
Astronomische Nachrichten, Vol.331, Issue 9/10, p.956
Astronomy and Astrophysics
Astronomy
4
Methods: Data Analysis, Stars: Individual (Hd 49933), Stars: Interiors, Stars: Oscillations
Scientific paper
The star HD 49933 has been observed by the mission CoRoT two times (for 60 and 137 days). Its spectrum shows a wealth of oscillation modes but was found difficult to analyse. In the following, we summarize why it was so, and then present a modeling of the star using seismic constraints and show the effect of the microscopic diffusion and of the overshoot in the modeling. We conclude that some convective overshoot from the core is needed while it is difficult to give a definitive conclusion concerning the effect of the microscopic diffusion on the modeling of HD 49933.
The CoRoT space mission, launched on 2006 December 27, was delopped and is operated by the CNES with participation of the Science Programs of ESA; ESA's RSSD, Austria, Belgium, Brazil, Germany and Spain.
Baudin Francois
Benomar Othman
Deheuvels Sebastien
Goupil Marie Jo
Lebreton Yveline
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