2019ApJS..242....8Z

We present a catalog of photometric redshifts and stellar masses for galaxies from imaging surveys serving the Dark Energy Spectroscopic Instrument project. The imaging footprints cover an area of over 14,000 deg². This catalog contains about 0.17 billion morphologically classified galaxies with r < 23 mag. It covers the redshift range of z < 1 and the mass range of 8.4< log(M_*)< 11.9. A total of five photometric bands are used, including three optical filters (g, r, and z) and two infrared filters (Wide-field Infrared Survey Explorer W1 and W2). We use k-nearest neighbors and local linear regression algorithms to estimate photometric redshifts. Based on a spectroscopic sample of about 2.2 million galaxies, we achieve a redshift bias of  = 2.4 x 10^–4, accuracy of σ_Δz_norm = 0.017, and outlier rate of about 5.1%. The stellar mass and other physical parameters are derived by stellar population synthesis model fitting based on our photometric redshifts. The differences in log(M_*) derived using spectroscopic and photometric redshifts present a 1σ dispersion of 0.09 dex.