The sloan digital sky survey Quasar Catalog. I. Early data release

Donald P. Schneider, Gordon T. Richards, Xiaohui Fan, Patrick B. Hall, Michael A. Strauss, Daniel E. Vanden Berk, James E. Gunn, Heidi Jo Newberg, Timothy A. Reichard, C. Stoughton, Wolfgang Voges, Brian Yanny, Scott F. Anderson, James Annis, Neta A. Bahcall, Amanda Bauer, Mariangela Bernardi, Michael R. Blanton, William N. Boroski, J. BrinkmannJohn W. Briggs, Robert Brunner, Scott Burles, Larry Carey, Francisco J. Castander, A. J. Connolly, István Csabai, Mamoru Doi, Scott Friedman, Joshua A. Frieman, Masataka Fukugita, Timothy M. Heckman, G. S. Hennessy, Robert B. Hindsley, David W. Hogg, Željko Ivezić, Stephen Kent, Gillian R. Knapp, Peter Z. Kunzst, Donald Q. Lamb, R. French Leger, Daniel C. Long, Jon Loveday, Robert H. Lupton, Bruce Margon, Avery Meiksin, Aronne Merelli, Jeffrey A. Munn, Matthew Newcomb, R. C. Nichol, Russell Owen, Jeffrey R. Pier, Adrian Pope, Constance M. Rockosi, David H. Saxe, David Schlegel, Walter A. Siegmund, Stephen Smee, Yehuda Snir, Mark SubbaRao, Alexander S. Szalay, Aniruddha R. Thakar, Alan Uomoto, Patrick Waddell, Donald G. York

Research output: Contribution to journalReview articlepeer-review

143 Scopus citations


We present the first edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 3814 objects (3000 discovered by the SDSS) in the initial SDSS public data release that have at least one emission line with a full width at half-maximum larger than 1000 km s-1, luminosities brighter than Mi* = -23, and highly reliable redshifts. The area covered by the catalog is 494 deg2; the majority of the objects were found in SDSS commissioning data using a multicolor selection technique. The quasar redshifts range from 0.15 to 5.03. For each object the catalog presents positions accurate to better than 0″.2 rms per coordinate, five-band (ugriz) CCD-based photometry with typical accuracy of 0.05 mag, radio and X-ray emission properties, and information on the morphology and selection method. Calibrated spectra of all objects in the catalog, covering the wavelength region 3800-9200 Å at a spectral resolution of 1800-2100, are also available. Since the quasars were selected during the commissioning period, a time when the quasar selection algorithm was undergoing frequent revisions, the sample is not homogeneous and is not intended for statistical analysis.

Original languageEnglish (US)
Pages (from-to)567-577
Number of pages11
JournalAstronomical Journal
Issue number2 1754
StatePublished - Feb 2002

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Catalogs
  • Quasars: general
  • Surveys


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