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Date and Time of the Query: 2018-12-15 T01:44:13 PST
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For refcode 2007AJ....134..102S:
There are 77429 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2007AJ....134..102S The Sloan Digital Sky Survey Quasar Catalog. IV. Fifth Data Release Donald P. Schneider, Patrick B. Hall, Gordon T. Richards, Michael A. Strauss, Daniel E. Vanden Berk, Scott F. Anderson, W. N. Brandt, Xiaohui Fan, Sebastian Jester, Jim Gray, James E. Gunn, Mark U. SubbaRao, Anirudda R. Thakar, Chris Stoughton, Alexander S. Szalay, Brian Yanny, Donald G. York, Neta A. Bahcall, J. Barentine, Michael R. Blanton, Howard Brewington, J. Brinkmann, Robert J. Brunner, Francisco J. Castander, Istvan Csabai, Joshua A. Frieman, Masataka Fukugita, Michael Harvanek, David W. Hogg, Zeljko Ivezic, Stephen M. Kent, S. J. Kleinman, G. R. Knapp, Richard G. Kron, Jurek Krzesinski, Daniel C. Long, Robert H. Lupton, Atsuko Nitta, Jeffrey R. Pier, David H. Saxe, Yue Shen, Stephanie A. Snedden, David H. Weinberg, and Jian Wu Abstract. We present the fourth edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog contains 77,429 objects; this is an increase of over 30,000 entries since the previous edition. The catalog consists of the objects in the SDSS Fifth Data Release that have luminosities larger than M_i_=-22.0 (in a cosmology with H_0_=70 km s^-1^ Mpc^-1^, {OMEGA}_M_=0.3, and {OMEGA}_{LAMBDA}_=0.7), have at least one emission line with FWHM larger than 1000 km s^-1^ or have interesting/complex absorption features, are fainter than i~15.0, and have highly reliable redshifts. The area covered by the catalog is ~5740 deg^2^. The quasar redshifts range from 0.08 to 5.41, with a median value of 1.48; the catalog includes 891 quasars at redshifts greater than 4, of which 36 are at redshifts greater than 5. Approximately half of the catalog quasars have i<19; nearly all have i<21. 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 0.03 mag, and information on the morphology and selection method. The catalog also contains basic radio, near-infrared, and X-ray emission properties of the quasars, when available, from other large-area surveys. The calibrated digital spectra cover the wavelength region 3800 -- 9200 Angstrom at a spectral resolution of =~2000; the spectra can be retrieved from the public database using the information provided in the catalog. The average SDSS colors of quasars as a function of redshift, derived from the catalog entries, are presented in tabular form. Approximately 96% of the objects in the catalog were discovered by the SDSS. Key words: Catalogs, Galaxies: Quasars: General, Surveys
There are 77429 NED objects in this reference.
Please click here for ADS abstract

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