The Sloan Digital Sky Survey Quasar Catalog IV. Fifth Data Release

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dc.creatorSchneider, Donald P.
dc.creatorHall, Patrick B.
dc.creatorRichards, Gordon T.
dc.creatorStrauss, Michael A.
dc.creatorBerk, Daniel E. Vanden
dc.creatorAnderson, Scott F.
dc.creatorBrandt, W. N.
dc.creatorFan, Xiaohui
dc.creatorJester, Sebastian
dc.creatorGray, Jim
dc.creatorGunn, James E.
dc.creatorSubbaRao, Mark U.
dc.creatorThakar, Anirudda R.
dc.creatorStoughton, Chris
dc.creatorSzalay, Alexander S.
dc.creatorYanny, Brian
dc.creatorYork, Donald G.
dc.creatorBahcall, Neta A.
dc.creatorBarentine, J.
dc.creatorBlanton, Michael R.
dc.creatorBrewington, Howard
dc.creatorBrinkmann, J.
dc.creatorBrunner, Robert J.
dc.creatorCastander, Francisco J.
dc.creatorCsabai, Istvan
dc.creatorFrieman, Joshua A.
dc.creatorFukugita, Masataka
dc.creatorHarvanek, Michael
dc.creatorHogg, David W.
dc.creatorIvezic, Zeljko
dc.creatorKent, Stephen M.
dc.creatorKleinman, S. J.
dc.creatorKnapp, G. R.
dc.creatorKron, Richard G.
dc.creatorKrzesinski, Jurek
dc.creatorLong, Daniel C.
dc.creatorLupton, Robert H.
dc.creatorNitta, Atsuko
dc.creatorPier, Jeffrey R.
dc.creatorSaxe, David H.
dc.creatorShen, Yue
dc.creatorSnedden, Stephanie A.
dc.creatorWeinberg, David H.
dc.creatorWu, Jian
dc.date2007-04-05
dc.date.accessioned2026-07-07T11:20:10Z
dc.date.available2026-07-07T11:20:10Z
dc.descriptionWe 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/Mpc, Omega_M = 0.3, and Omega_Lambda = 0.7) have at least one emission line with FWHM larger than 1000 km/s, 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 sq. deg. 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 four, of which 36 are at redshifts greater than five. 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 arcsec. 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--9200A 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.
dc.description37 pages, Accepted for publication in AJ
dc.identifierhttps://arxiv.org/abs/0704.0806
dc.identifierhttp://arxiv.org/abs/0704.0806
dc.identifierAstron.J.134:102-117,2007
dc.identifierdoi:10.1086/518474
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193880
dc.subjectAstrophysics
dc.titleThe Sloan Digital Sky Survey Quasar Catalog IV. Fifth Data Release
dc.typetext

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