Variability Census of Legacy Catalogs. V. 11,820+ New <i>δ</i> Scuti and <i>γ</i> Doradus Stars

Abstract This study identifies over 3335 new δ Scuti and 8496 new γ Doradus stars. These discoveries result from the fifth phase of a variability census of A-F stars selected from the legacy catalogs: PPM, HD, SAO, Bonner Durchmusterung, Córdoba Durchmusterung, and Southern Durchmusterung. Across all the five project phases, this comprehensive survey has analyzed TESS light curves for 193,940 A-F stars and identified over 14,510 δ Scuti, 18,382 γ Doradus, and 2354 eclipsing binaries (EBs), along with thousands of rotational variables. Notably, over 3900 of these variables exhibit hybrid δ Sct- γ Dor pulsations, and more than 360 EBs contain pulsating ( δ Sct or γ Dor) primary components. Using TESS data, this work has revealed a significant population of previously undetected variable stars, essential for stellar and asteroseismic studies due to their relatively bright nature.