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During its 2-year Prime Mission, TESS observed over 232,000 stars at a 2-mincadence across ~70% of the sky. These data provide a record of photometricvariability across a range of astrophysically interesting time scales, probingstellar rotation, stellar binarity, and pulsations. We have analyzed the TESS2-min light curves to identify periodic variability on timescales 0.01-13 days,and explored the results across various stellar properties. We have identifiedover 46,000 periodic variables with high confidence, and another 38,000 withmoderate confidence. These light curves show differences in variability typeacross the HR diagram, with distinct groupings of rotational, eclipsing, andpulsational variables. We also see interesting patterns acrossperiod-luminosity space, with clear correlations between period and luminosityfor high-mass pulsators, evolved stars, and contact binary systems, adiscontinuity corresponding to the Kraft break, and a lower occurrence ofperiodic variability in main-sequence stars on timescales of 1.5 to 2 days. Thevariable stars identified in this work are cross-identified with several othervariability catalogs, from which we find good agreement between the measuredperiods of variability. There are ~65,000 variable stars that are newlyidentified in this work, which includes rotation rates of low-mass stars,high-frequency pulsation periods for high-mass stars, and a variety of giantstar variability.

Variability Catalog of Stars Observed During the TESS Prime Mission