Variability Census of Legacy Catalogs: New Pulsating Variables and Eclipsing Binaries

I present the preliminary results of a comprehensive variability census of the four legacy catalogs: BD (+CD+SD), HD, SAO, and PPM. This dedicated survey project aims to identify bright A-F type variable stars using high-precision space photometry from the Transiting Exoplanet Survey Satellite (TESS ) and Gaia. Phases I through V of this survey, encompassing analyses of 193,940 A-F stars selected from the aforementioned catalogs, have been completed. To date, the project has yielded a substantial number of new variable star discoveries, including: over 14,510 new δ Scuti stars, more than 18,382 new γ Doradus stars, and over 2,354 new eclipsing binary systems, with approximately 360 binaries exhibiting pulsations in the primary components. Furthermore, thousands of rotational variables and dozens of Heartbeat stars and RR Lyrae stars have been identified, demonstrating the power of this systematic approach in revealing the rich diversity of stellar variability. Due to potential blending and contamination in TESS photometry, the binarity of a few pulsating stars or those eclipsing binaries exhibiting superimposed intrinsic pulsations of δ Scuti and γ Doradus types should be rechecked. Follow-up studies of individual systems are necessary to resolve contamination issues and accurately identify the true source of variability. The full list of newly identified variable stars is presented in machine-readable format in the attached file `PPM_AFstars_NewVar_R5.csv', and an atlas of selected representative light curves is provided as a separate PDF. Citation: Zhou, Ai-Ying: 2023, Res. Notes AAS, Vol.7, 210 (I) Zhou, Ai-Ying: 2024, Res. Notes AAS, Vol.8, 81 (II) Zhou, Ai-Ying: 2024, Res. Notes AAS, Vol.8, 190 (III) Zhou, Ai-Ying: 2025, Res. Notes AAS, Vol.9, 56 (IV) Zhou, Ai-Ying: 2025, Res. Notes AAS, Vol.9, 1?? (V)