UNIONS-VLASS Radio Galaxy Catalog

The Ultraviolet Near-Infrared Optical Northern Survey (UNIONS) - Very Large Array Sky Survey (VLASS) radio galaxy catalog Datasets included: Dataset Bands Website VizieR UNIONS CFHT:u + r; Subaru: g + z; Pan-STARRS: i https://www.skysurvey.cc/ VLASS Epoch 2 VLA, 3 GHz https://cirada.ca/vlasscatalogueql0 FIRST VLA, 1.4 GHz https://sundog.stsci.edu/ VIII/92/first14 RACS-mid ASKAP, 1.4 GHz https://research.csiro.au/racs/home/data-2/racs- mid1-dr2/ LoTSS DR2 LOFAR, 144 MHz https://lofar-surveys.org/dr2_release.html SDSS DR16 ugriz https://www.sdss4.org/dr16/ V/154/sdss16 Pan-STARRS grizy https://outerspace.stsci.edu/display/PANSTARRS/ II/349/ps1 AllWISE 3.4, 4.6, 12, and 22 micron https://wise2.ipac.caltech.edu/docs/release/allwise/ II/328/allwise unWISE 3.4 and 4.6 micron https://unwise.me/ II/363/unwise Users are encouraged to check VizieR for AllWISE, unWISE, SDSS, and Pan-STARRS for full column information and descriptions. Supplemented columns: sep_{survey1}_{survey2} arcsec angular separations of each pair of radio surveys and UNIONS alpha_{survey1}_{survey2} spectral index and the corresponding errors of each pair of radio surveys r_obs observed radio loudness luminosity_{frequency} W/Hz radio spectral luminosity at a certain frequency mag_{survey} mag radio AB magnitudes [mag] for VLASS and FIRST ls_{survey} kpc projected linear size [kpc] of VLASS and LoTSS flag_z_photo reliability of UNIONS photo-z Z_B_ref preferred UNIONS redshifts Z_ref preferred redshifts extended flag of an extended radio source flag_multi_opt flag of multiple optical counterparts The calculations and details of these columns are described in Section 3 and Table 3 in Zhong et al. 2025, ApJS (https://iopscience.iop.org/article/10.3847/1538-4365/ae03c3).