TESS–Gaia Light Curve: A PSF-based TESS FFI Light-curve Product

Abstract The Transiting Exoplanet Survey Satellite (TESS) is continuing its second extended mission after 55 sectors of observations. TESS publishes full-frame images (FFIs) at a cadence 1800, 600, or 200 s, allowing light curves to be extracted for stars beyond limited number pre-selected stars. Simulations show that thousands exoplanets, eclipsing binaries, variable stars, and other astrophysical transients can found in these FFI curves. To obtain high-precision curves, we forward model the with effective point-spread function (PSF) remove contamination from nearby We adopt star positions magnitudes Gaia DR3 as priors. resulting called TESS–Gaia (TGLCs), photometric precision closely tracking prelaunch prediction noise level. TGLCs’ reaches ≲2% 16th magnitude even crowded fields. publish TGLC aperture PSF down through Mikulski Archive Space Telescopes all available will continue deliver future open-source package tglc 3 Via 10.17909/610m‐9474 . publicly enable any user produce customized