COSMOS2020: A Panchromatic View of the Universe to z ? 10 from Two Complementary Catalogs

The Cosmic Evolution Survey (COSMOS) has become a cornerstone of extragalactic astronomy. Since the last public catalog in 2015, wealth new imaging and spectroscopic data been collected COSMOS field. This paper describes collection, processing, analysis this to produce reference photometric redshift catalog. Source detection multi-wavelength photometry is performed for 1.7 million sources across $2\,\mathrm{deg}^{2}$ field, $\sim$966,000 which are measured with all available broad-band using both traditional aperture methods profile-fitting extraction tool, Farmer, we have developed. A detailed comparison two resulting catalogs presented. Photometric redshifts computed each utilizing independent codes. Finally, made between performance methodologies codes demonstrate an exceptional degree self-consistency redshifts. $i<21$ sub-percent accuracy even faintest at $25<i<27$ reach precision $5\,\%$. these results discussed context previous, current, future surveys Compared COSMOS2015, reaches same almost one magnitude deeper. Both their solutions physical parameters will be through usual astronomical archive systems (ESO Phase 3, IPAC IRSA, CDS).