Tidally induced oscillations as a probe of stellar interiors and test of evolutionary models.

Due to operational space satellite missions like CoRoT and Kepler, asteroseismology is one of the most rapidly developing fields in astrophysics. Given that nearly every second star in the solar neighbourhood is a binary, the high-quality photometric data delivered by the actual space missions imply the discovery of numerous binaries with pulsating components. Coupled with the fact that various types of stars reside in binary systems and that binaries allow for precise determination of the system and stellar parameters, this makes the double stars outstanding objects for asteroseismic investigations and testing stellar evolution models. Tidally induced oscillations occur due to the resonances between dynamic tides and free stellar oscillations. They open up a new opportunity to test state-of-the-art evolutionary models. Our ultimate goal is to model this type of oscillations in binaries using theoretical predictions and to check whether the state-of-the-art models are consistent with the observations. We plan to compile a catalog of binary candidates expected to exhibit tidally induced oscillations from high-quality Kepler data and perform an in-depth asteroseismic analysis. We also plan to establish novel analyses, developing techniques essential for subsequent asteroseismic modeling.

Keywords:Binaries, Fundamental parameters, Stellar pulsations, Asteroseismology

Disciplines:Condensed matter physics and nanophysics