Variability of {delta} Scuti stars with TESS LC

We examined TESS light curves for 434 stars, including many for which few previous observations exist. We found that 62 are not {delta} Scuti pulsators, with most instead showing variability from binarity.

For the 372 {delta} Scuti stars, we provide a catalogue of the period and amplitude of the dominant pulsation mode. Using Gaia DR3 parallaxes, we place the stars in the period-luminosity (P-L) diagram and confirm previous findings that most stars lie on a ridge that corresponds to pulsation in the fundamental radial mode, and that many others fall on a second ridge that is a factor two shorter in period. This second ridge is seen more clearly than before, thanks to the revised periods and distances.