Discovery of delta Scuti variables in eclipsing binary systems II. Southern TESS field search

ABSTRACT The presence of pulsating stars in eclipsing binary systems (EBs) makes these objects significant since they allow us to investigate the stellar interior structure and evolution. Different types could be found EBs, such as δ Scuti variables. EBs have been known for decades, increasing number is important understanding pulsational structure. Hence, this study, research was carried out on southern TESS field discover new EBs. We produced an algorithm search detached semidetached considering three steps: orbital period (Porb)’s harmonics Fourier spectrum, skewness light curves, classification upsilon program. If two steps classify a system EB, also identifies it EB. pixel files targets were analysed see whether fluxes contaminated by other systems. No contamination found. researched existence pulsation through with visual inspection. To confirm Scuti-type oscillations, variation removed from curve, residuals analysed. Consequently, we identified 42 candidates Porb, L, MV calculated. Their positions H–R diagram orbital-pulsation relationship examined our if any them showed frequency modulation discovered one candidate tidally tilted pulsators.