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Peakbagging of red-giant stars in binary systems
Nathalie Themessl (Max Planck Institute for Solar System Research (MPS))
Red-giant stars show rich oscillation spectra comprising low-spherical degree pressure modes that follow a distinct pattern in Fourier space (Tassoul, 1980). The unambiguous identification of these modes provides rigorous constraints on stellar models, and allows the determination of the stellar parameters. Based on more than 4 years of Kepler observations we performed a thorough asteroseismic study of three red giants in eclipsing binary systems. In these stars we derived the central frequencies, mode widths and mode heights of detected l=[0,1,2,3] modes. This information is then used to constrain stellar models and ages of these stars.