Poster abstract details

An asteroseismic study of HD 51756, a B0.5 star from the CoRoT sample
Peter Papics, Maryline Briquet, Michel Auvergne, Conny Aerts, Pieter Degroote, Ewa Niemczura, Annie Baglin, Frederic Baudin, Claude Catala, Eric Michel, Reza Samadi

Abstract


Recent space-missions like the CoRoT and Kepler satellites opened up a new era in asteroseimology. The seismic data from these instruments have a factor of 1000 better precision than the ground-based observations we had to rely on so far. We aim to use space-data to derive a better description of physical processes - like core overshooting and internal rotation - in theoretical modelling of massive B-type stars. Better understanding of mixing processes inside stars could lead to vast improvements of stellar evolution models in the upper part of the HRD. With this poster we present an in-depth frequency analysis of the white-light CoRoT photometry of HD 51756, a B0.5 IV star observed during the LRa02 run from November 2008 to March 2009. In addition to this, ground-based spectroscopy (gathered by the CORALIE and HARPS instruments) is presented to check for variability and binarity, and to determine the fundamental stellar parameters.