Tables of counterpart associations between Gaia DR3 and CatWISE2020. Uses probabilistic cross-match algorithms of macauff, as described by Wilson & Naylor (MNRAS, 2017, 2018a,b) and Wilson (RNAAS, 2022). Sources are returned either as a pairing, in which the Gaia and WISE entries are the same astrophysical source detected twice, or as non-matches, with that particular object in one of the catalogues having a corresponding flux upper limits in the opposing catalogue. Join tables are supplemented include various pieces of metadata such as the probability of the match/non-match, likelihood of match on purely position or brightness grounds, and information on the level to which objects suffer contamination due to hidden and unresolved background sources.
Two sets of cross-match join tables are provided: one that includes the relative likelihoods of match association and non-match coincidence due to the photometric brightnesses of the objects in the two datasets, and hence source colour, and one that does not consider colour and solely uses the relative positions, astrometric uncertainties, and on-sky catalogue densities to determine the most likely match pairings. These are referred to as "astro_only" -- the without-photometry, astrometric-information-only match -- and "astro_photo" -- with-photometry, astrometric-and-photometric match -- respectively.