A catalog of quasar properties from Sloan Digital Sky Survey Data Release 7

Yue Shen, Gordon T. Richards, Michael A. Strauss, Patrick B. Hall, Donald P. Schneider, Stephanie Snedden, Dmitry Bizyaev, Howard Brewington, Viktor Malanushenko, Elena Malanushenko, Dan Oravetz, Kaike Pan, Audrey Simmons

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1134 Scopus citations


We present a compilation of properties of the 105,783 quasars in the Sloan Digital Sky Survey Data Release 7 (DR7) quasar catalog. In this product, we compile continuum and emission line measurements around the Hα, Hβ, Mg II, and C IV regions, as well as other quantities such as radio properties, and flags indicating broad absorption line quasars, disk emitters, etc. We also compile virial black hole mass estimates based on various calibrations. For the fiducial virial mass estimates we use the Vestergaard & Peterson (VP06) calibrations for Hβ and C IV, and our own calibration for Mg II which matches the VP06 Hβ masses on average. We describe the construction of this catalog and discuss its limitations. The catalog and its future updates will be made publicly available online.

Original languageEnglish (US)
Article number45
JournalAstrophysical Journal, Supplement Series
Issue number2
StatePublished - Jun 2011

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • black hole physics
  • galaxies: active
  • quasars: general
  • surveys


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