The Sloan Digital Sky Survey Quasar Catalog: Fourteenth Data Release
I. P\^aris, P. Petitjean, E. Aubourg, A.D. Myers, A. Streblyanska,, B.W. Lyke, S.F. Anderson, E. Armengaud, J. Bautista, M.R. Blanton, M., Blomqvist, J. Brinkmann, J.R. Brownstein, W.N. Brandt, E. Burtin, K. Dawson,, S. de la Torre, A. Georgakakis, H. Gil-Marin, P.J. Green

TL;DR
This paper presents the fourteenth data release of the SDSS quasar catalog, including over half a million quasars with multi-wavelength data, new discoveries, and improved identification methods from SDSS-IV/eBOSS.
Contribution
It provides a comprehensive, updated quasar catalog with new discoveries, refined selection, and multi-wavelength properties, enhancing resources for cosmological and astrophysical research.
Findings
Over 526,000 quasars cataloged, including 144,046 new discoveries.
High identification accuracy with about 0.5% contamination.
Includes multi-wavelength data for a large sample of quasars.
Abstract
We present the Data Release 14 Quasar catalog (DR14Q) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV). This catalog includes all SDSS-IV/eBOSS objects that were spectroscopically targeted as quasar candidates and that are confirmed as quasars via a new automated procedure combined with a partial visual inspection of spectra, have luminosities (in a CDM cosmology with , , and ), and either display at least one emission line with a full width at half maximum (FWHM) larger than or, if not, have interesting/complex absorption features. The catalog also includes previously spectroscopically-confirmed quasars from SDSS-I, II and III. The catalog contains 526,356…
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