The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release

Understand

We present the final Sloan Digital Sky Survey IV (SDSS-IV) quasar catalog from Data Release 16 of the extended Baryon Oscillation Spectroscopic Survey (eBOSS).

• This catalog comprises the largest selection of spectroscopically confirmed quasars to date.
• The full catalog includes two sub-catalogs: a "superset" of all SDSS-IV/eBOSS objects targeted as quasars containing 1,440,615 observations and a quasar-only catalog containing 750,414 quasars, including 225,082 new quasars appearing in an SDSS data release for the first time, as well as known quasars from SDSS-I/II/III.
• We present automated identification and redshift information for these quasars alongside data from visual inspections for 320,161 spectra.