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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 358586.0, MPI für Astronomie / Publikationen_mpia
The Sloan Digital Sky Survey Quasar Catalog. IV. Fifth Data Release
Authors:Schneider, D. P.; Hall, P. B.; Richards, G. T.; Strauss, M. A.; Vanden Berk, D. E.; Anderson, S. F.; Brandt, W. N.; Fan, X.; Jester, S.; Gray, J.; Gunn, J. E.; SubbaRao, M. U.; Thakar, A. R.; Stoughton, C.; Szalay, A. S.; Yanny, B.; York, D. G.; Bahcall, N. A.; Barentine, J.; Blanton, M. R.; Brewington, H.; Brinkmann, J.; Brunner, R. J.; Castander, F. J.; Csabai, I.; Frieman, J. A.; Fukugita, M.; Harvanek, M.; Hogg, D. W.; Ivezic, Z.; Kent, S. M.; Kleinman, S. J.; Knapp, G. R.; Kron, R. G.; Krzesinski, J.; Long, D. C.; Lupton, R. H.; Nitta, A.; Pier, J. R.; Saxe, D. H.; Shen, Y.; Snedden, S. A.; Weinberg, D. H.; Wu, J.
Date of Publication (YYYY-MM-DD):2007
Title of Journal:The Astronomical Journal
Start Page:102
End Page:117
Audience:Not Specified
Abstract / Description: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 Mi=-22.0 (in a cosmology with H0=70 km s-1 Mpc-1, OmegaM=0.3, and OmegaLambda=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 deg2. 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 Å 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.
Free Keywords:Catalogs; Galaxies: Quasars: General; Surveys
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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