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The Sloan Digital Sky Survey Quasar catalog: fourteenth data release

Research output: Contribution to journalArticlepeer-review

Author(s)

Isabelle Pâris, Patrick Petitjean, Eric Aubourg, Adam D. Myers, Alina Streblyanska, Brad W. Lyke, Scott F. Anderson, Éric Armengaud, Julian Bautista, Michael R. Blanton, Michael Blomqvist, Jonathan Brinkmann, Joel R. Brownstein, William Nielsen Brandt, Étienne Burtin, Kyle Dawson, Sylvain de la Torre, A. Georgakakis, H. Gil-Marin, P. J. Green & 21 more P. B. Hall, J. -P. Kneib, S. M. LaMassa, J. -M. Le Goff, Chelsea MacLeod, V. Mariappan, I. D. McGreer, A. Merloni, P. Noterdaeme, N. Palanque Delabrouille, W. J. Percival, A. J. Ross, G. Rossi, D. P. Schneider, H. -J. Seo, R. Tojeiro, B. A. Weaver, A. -M. Weijmans, C. Yèche, P. Zarrouk, Gong-Bo Zhao

School/Research organisations

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 Mi [z = 2] < −20.5 (in a Λ CDM cosmology with H0 = 70 km s−1 Mpc−1, ΩM =0.3, and ΩΛ = 0.7), and either display at least one emission line with a full width at half maximum larger than 500 km s−1 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 quasars (144 046 are new discoveries since the beginning of SDSS-IV) detected over 9376 deg2 (2044 deg2 having new spectroscopic data available) with robust identification and redshift measured by a combination of principal component eigenspectra. The catalog is estimated to have about 0.5% contamination. Redshifts are provided for the Mg II emission line. The catalog identifies 21 877 broad absorption line quasars and lists their characteristics. For each object, the catalog presents five-band (u, g, r, i, z) CCD-based photometry with typical accuracy of 0.03 mag. The catalog also contains X-ray, ultraviolet, near-infrared, and radio emission properties of the quasars, when available, from other large-area surveys. The calibrated digital spectra, covering the wavelength region 3610–10 140 Å at a spectral resolution in the range 1300 < R < 2500, can be retrieved from the SDSS Science Archiver Server.
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Original languageEnglish
Article numberA51
Number of pages17
JournalAstronomy & Astrophysics
Volume613
DOIs
Publication statusPublished - 30 May 2018

    Research areas

  • Catalogs, Surveys, Quasars: general

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