Binary and seismic modelling of the Kepler system KIC 10661783 with the δ Scuti component

Amadeusz Miszuda, Wojciech Szewczuk and Jadwiga Daszyńska-Daszkiewicz

We present the results of the comprehensive study of the eclipsing binary system KIC 10661783 whose main component is a δ Scuti pulsating star. The Fourier analysis of the whole Kepler light curve, corrected for the binary effects, reveals 750 frequency peaks. Those with the highest amplitudes concentrate in the range of 20-30d^-1. The small-amplitude signals, found in the low-frequency range, can be a manifestation of gravity-mode pulsations. To reproduce the observed range of frequencies, we computed a grid of pulsational models. To obtain instability for high-order g modes, an increase of the mean opacity at the depth corresponding to the temperature of about 115 000 K was indispensable. For evolutionary computations the MESA-binary module was used to include interactions between the binary components.

Proceedings of the Polish Astronomical Society, vol. 10, 373-377 (2020)

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