Bona fide RGs/EBs discovered in the present work that are possibly SB2. Top panels: Kepler light curves folded over the orbital period (black markers), with a rebinned version of it in 30-min steps (red line). Bottom panels: PSD as a function of frequency of the Kepler light curves – after eclipse removal – centered around the RG oscillation modes. Power spectral density was smoothed with a triangular weighted moving average (three bins wide at half maximum) to highlight the oscillation mode visibility.