/ftp/cats/7/260



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VII/260   ==OBSOLETE version of Catalogue==
31-Mar-2013: (by Francois Ochsenbein) See VII/269
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=VII/260
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drwxr-xr-x 257 cats archive 8192 Feb 8 10:28 [Up] drwxr-xr-x 2 cats archive 4096 Jan 13 2023 [TAR file] -rw-r--r-- 1 cats archive 394 Dec 19 2022 .message -r--r--r-- 1 cats archive 14408 Jun 24 2010 ReadMe -rw-r--r-- 1 cats archive 2507 Jan 30 2014 +footg5.gif -rw-r--r-- 1 cats archive 5627 Jan 30 2014 +footg5.png -rw-r--r-- 1 cats archive 18016 Jan 30 2014 +footg8.gif -rw-r--r-- 1 cats archive 46283 Jan 30 2014 +footg8.png -r--r--r-- 1 cats archive 12908042 May 26 2010 dr7qso.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 34155 May 26 2010 table5.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : VII/260 The SDSS-DR7 quasar catalog (Schneider+, 2010) ================================================================================ The Sloan Digital Sky Survey quasar catalog. V. Seventh data release. Schneider D.P., Richards G.T., Hall P.B., Strauss M.A., Anderson S.F., Boroson T.A., Ross N.P., Shen Y., Brandt W.N., Fan X., Inada N., Jester S., Knapp G.R., Krawczyk C.M., Thakar A.R., Vanden Berk D.E., Voges W., Yanny B., York D.G., Bahcall N.A., Bizyaev D., Blanton M.R., Brewington H., Brinkmann J., Eisenstein D., Frieman J.A., Fukugita M., Gray J., Gunn J.E., Hibon P., Ivezic Z., Kent S.M., Kron R.G., Lee M.G., Lupton R.H., Malanushenko E., Malanushenko V., Oravetz D., Pan K., Pier J.R., Price T.N., Saxe D.H., Schlegel D.J., Simmons A., Snedden S.A., Subbarao M.U., Szalay A.S., Weinberg D.H. <Astron. J., 139, 2360-2373 (2010)> =2010AJ....139.2360S ================================================================================ ADC_Keywords: QSOs ; Surveys ; Photometry, SDSS ; Redshifts Keywords: catalogs - quasars: general - surveys Abstract: We present the fifth edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog, which is based upon the SDSS Seventh Data Release. The catalog, which contains 105783 spectroscopically confirmed quasars, represents the conclusion of the SDSS-I and SDSS-II quasar survey. The catalog consists of the SDSS objects that have luminosities larger than M_i_=-22.0 (in a cosmology with H_0_=70km/s/Mpc, Omega_M_=0.3, and Omega_Lambda=0.7), have at least one emission line with FWHM larger than 1000km/s or have interesting/complex absorption features, are fainter than i 15.0, and have highly reliable redshifts. The catalog covers an area of  9380deg^2^. The quasar redshifts range from 0.065 to 5.46, with a median value of 1.49; the catalog includes 1248 quasars at redshifts greater than 4, of which 56 are at redshifts greater than 5. The catalog contains 9210 quasars with i<18; slightly over half of the entries have i<19. For each object the catalog presents positions accurate to better than 0.1"rms per coordinate, five-band (ugriz) CCD-based photometry with typical accuracy of 0.03mag, and information on the morphology and selection method. The catalog also contains 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 3800-9200AA at a spectral resolution of  2000; the spectra can be retrieved from the SDSS public database using the information provided in the catalog. Over 96% of the objects in the catalog were discovered by the SDSS. We also include a supplemental list of an additional 207 quasars with SDSS spectra whose archive photometric information is incomplete. Description: The SDSS used a CCD camera on a dedicated 2.5m telescope at Apache Point Observatory, New Mexico, to obtain images in five broad optical bands (ugriz) over approximately 10000deg^2^ of the high Galactic latitude sky.