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We present the first edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 3814 objects (3000 discovered by the SDSS) in the initial SDSS public data release that have at least one emission line with a full width at half-maximum larger than 1000 km s-1, luminosities brighter than Mi*=-23, and highly reliable redshifts. The area covered by the catalog is 494 deg2; the majority of the objects were found in SDSS commissioning data using a multicolor selection technique. The quasar redshifts range from 0.15 to 5.03. 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 0.05 mag, radio and X-ray emission properties, and information on the morphology and selection method. Calibrated spectra of all objects in the catalog, covering the wavelength region 3800-9200 ? at a spectral resolution of 1800-2100, are also available. Since the quasars were selected during the commissioning period, a time when the quasar selection algorithm was undergoing frequent revisions, the sample is not homogeneous and is not intended for statistical analysis. Based on observations obtained with the Sloan Digital Sky Survey, which is owned and operated by the Astrophysical Research Consortium.
Table: The SDSS Quasar Catalog I ======================================================================= Byte-by-byte Description of file: datafile3.txt --------------------------------------------------------------------- Bytes Format Units Label Explanations ----------------------------------------------------------------------- 1- 18 A18 --- Name Object name (1) 21- 28 I8 10+7rad RA Right Ascension (J2000) in units of 10^7^ radians 31- 38 I8 10+7rad DE Declination (J2000) in units of 10^7^ radians 40- 43 I4 10+3 z Redshift times 1000 45- 45 I1 --- r_Name Source of object (2) 47- 50 I4 100mag u*mag The u* band magnitude times 100 52- 54 I3 100mag e_u*mag The error in u*mag 56- 59 I4 100mag g*mag The g* band magnitude times 100 61- 63 I3 100mag e_g*mag The error in g*mag 65- 68 I4 100mag r*mag The r* band magnitude times 100 70- 72 I3 100mag e_r*mag The error in r*mag 74- 77 I4 100mag i*mag The i* band magnitude times 100 79- 81 I3 100mag e_i*mag The error in i*mag 83- 86 I4 100mag z*mag The z* band magnitude times 100 88- 90 I3 100mag e_z*mag The error in z*mag 93- 95 I3 100mag uAbs Galactic absorption in u band times 100 97-102 I6 100mJy PFlux FIRST peak flux density at 20 cm times 100 104-107 I4 -1000.[ct/s] Cts Log of ROSAT full band count rate times -1000 109-112 I4 -100mag i*Mag Absolute i* band magnitude times -100 (3) 115 I1 --- Morph Morphology flag (4) 118 I1 --- TarSel Target selection version (5) 121 I1 --- QFlag Quasar target flag (6) 124 I1 --- FFlag FIRST target flag (6) 127 I1 --- RFlag ROSAT target flag (6) 130 I1 --- SFlag Serendipity target flag (6) 133 I1 --- StFlag Star target flag (6) 136 I1 --- GFlag Galaxy target flag (6) 139-142 I4 --- SNum SDSS Imaging Run Number for photometric measurements 144-148 I5 d MJD Modified Julian Date of spectroscopic observation 151-153 I3 --- Plate Spectroscopic Plate Number 155-157 I3 --- Fiber Spectroscopic Fiber Number 159-178 A20 --- OName Object Name if not discovered by SDSS -------------------------------------------------------------------------------- Note (1): The full name of an object is SDSS hhmmss.ss+ddmmss.s (J2000). Note (2): 0 = EDR quasar; 1 = Extreme BAL Search; 2 = Visual search of EDR spectra. Note (3): Assuming H_o_ = 50 km/s/Mpc, Omega_M_ = 1.00, Omega_L_ = 0.00, and alpha_Q_ = -0.50. Note (4): 0 = point source; 1 = extended. Note (5): 1 = 2.2a; 2 = 2.5; 3 = 2.7. Note (6): 0 = not targetted; 1 = targetted. -------------------------------------------------------------------------- example: 000011.96+000225.1 8703 7037 479 0 1787 1 1759 1 1769 1 1764 1 1757 3 16 .00 1661 2471 0 0 1 0 1 0 0 0 125 51791 387 200 LBQS 2357-0014 000039.00-001804.0 28366 -52554 2114 0 1947 3 1927 2 1909 3 1900 2 1883 6 17 .00 0 2650 0 0 1 0 0 1 1 0 125 51791 387 167 000042.89+005539.4 31197 161903 951 0 1835 2 1821 2 1796 1 1791 1 1777 3 15 .00 0 2590 0 0 1 0 0 1 1 0 125 51791 387 531 LBQS 2358+0038 .... 235938.40-003448.5 62816148 -101254 1210 2 1810 2 1811 1 1786 1 1780 2 1790 3 20 .00 0 2654 0 0 1 0 0 1 1 0 94 51791 387 188 235944.13-005738.2 62820319 -167660 1787 0 1938 3 1926 2 1913 2 1883 2 1874 5 23 .00 0 2634 0 0 1 0 0 1 1 0 94 51791 387 134 235958.21+005139.7 62830553 150282 2023 0 1915 3 1884 1 1863 1 1854 2 1837 4 13 .00 0 2685 0 0 1 0 0 0 0 0 125 51791 387 458