The Sloan Digital Sky Survey Quasar Catalog. II. First Data Release

By D. Schneider, Xiaohui Fan, P. Hall, S. Jester, Gordon Richards, C. Stoughton, M. Strauss, Mark SubbaRao, D. V. vanden Berk, S. Anderson and 41 more. 2003

168 citations recorded by the source corpus.

We present the second edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 16,713 objects in the SDSS First Data Release that have luminosities larger than Mi = -22 (in a cosmology with H0 = 70 km s-1 Mpc-1, ΩM = 0.3, and ΩΛ = 0.7), have at least one emission line with FWHM larger than 1000 km s-1, and have highly reliable redshifts. The area covered by the catalog is ≈1360 deg2. The quasar redshifts range from 0.08 to 5.41, with a median value of 1.43. 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 some radio, near-infrared, and X-ray emission properties of the quasars, when available, from other large-area surveys. Calibrated digital spectra of all objects in the catalog, covering the wavelength region 3800–9200 Å at a spectral resolution of 1800–2100, are available. This publication supersedes the first SDSS Quasar Catalog, which was based on material from the SDSS Early Data Release. A summary of corrections to current quasar databases is also provided. The majority of the objects were found in SDSS commissioning data using a multicolor selection technique. Since the quasar selection algorithm was undergoing testing during the entire observational period covered by this catalog, care must be taken when assembling samples from the catalog for use in statistical studies. A total of 15,786 objects (94%) in the catalog were discovered by the SDSS; 12,173 of the SDSS discoveries are reported here for the first time. Included in the new discoveries are five quasars brighter than i = 16.0 and 17 quasars with redshifts larger than 4.5.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/4c68bca998d37fb0dc7c0f1c3e8d71e2264f2a72

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In Astronomy and Astrophysics

1. D. Schneider
2. J. Brinkmann
3. L. Hernquist
4. P. Hopkins
5. Gordon Richards
6. M. Strauss
7. M. Blanton
8. T. Heckman

Citations in the corpus

• THE QUASAR OUTFLOW CONTRIBUTION TO AGN FEEDBACK: VLT MEASUREMENTS OF SDSS J0318-0600 (2009, background): “SDSS J0318−0600 is a luminous quasar (log LBol ≈ 47.7 erg s−1, see Section 5; z = 1.9668; Hall et al. 2002; Schneider et al. 2003) that shows a myriad of outflow components ranging from a high-ionization broad absorption line system to several narrow absorption line (NAL) features spanning a…”
• The evolution of the broad-line region among SDSS quasars (2005, methodology): “For this purpose, a simple power-law SED with a power-law index of α = 0.5 (where fν ∝ ν −α) is assumed for the intrinsic spectral shape of quasars, following other studies on SDSS quasars (e.g., Schneider et al. 2002, 2003).”
• A Catalog of Broad Absorption Line Quasars from the Sloan Digital Sky Survey Early Data Release (2003, methodology): “We begin by fitting to a geometric mean composite spectrum constructed using the methods of Vanden Berk et al. (2001) from the quasars in the SDSS First Data Release (DR1; Abazajian et al. 2003) quasar catalog (Schneider et al. 2003).”
• MASS FUNCTIONS OF THE ACTIVE BLACK HOLES IN DISTANT QUASARS FROM THE LARGE BRIGHT QUASAR SURVEY, THE BRIGHT QUASAR SURVEY, AND THE COLOR-SELECTED SAMPLE OF THE SDSS FALL EQUATORIAL STRIPE (2009, methodology): “2 (top panel) shows the SDSS flux limits folded with the cut-off in line widths of 1000km s−1 adopted for the SDSS quasars (Schneider et al. 2003).”
• The Sloan Digital Sky Survey Quasar Catalog. IV. Fifth Data Release (2007, methodology): “Previous versions of the catalog (Schneider et al. 2002, hereafter Paper I; Schneider et al. 2003, hereafter Paper II; Schneider et al. 2005, hereafter Paper III ) were published with the SDSS Early Data Release (EDR; Stoughton et al. 2002), the SDSS First Data Release (DR1; Abazajian et al. 2003),…”
• The Ensemble Photometric Variability of ~25,000 Quasars in the Sloan Digital Sky Survey (2003, background): “First, the definitions of “quasar” are slightly different – Schneider et al. (2003) impose an absolute magnitude limit of Mi ≤ −22.0, and they make no distinction between point-like and extended sources.”
• First Measurement of the Clustering Evolution of Photometrically Classified Quasars (2005, background): “Unlike Richards et al. (2004), we do not consider matches to the DR1 quasar catalog (hereafter DR1QSO; Schneider et al. 2003), as it may be biased to quote efficiencies from data that the KDE algorithm was trained on.”
• EFFICIENT PHOTOMETRIC SELECTION OF QUASARS FROM THE SLOAN DIGITAL SKY SURVEY. II. ∼1, 000, 000 QUASARS FROM DATA RELEASE 6 (2004, methodology): “Most of the 1018 ‘‘missing’’ objects result from the fact that we are using only that imaging area that formally belongs to the DR1 release, whereas the Schneider et al. (2003) catalog included all quasars found within any ‘‘stripe’’ that was part of the DR1 release.22 Other objects are missing…”
• The Sloan Digital Sky Survey quasar catalog: ninth data release (2012, unknown): “This catalog keeps the tradition of producing quasar catalogs (Schneider et al. 2002, 2003, 2005, 2007, 2010) from SDSS-I and II (York et al. 2000).”
• The Sloan Digital Sky Survey Quasar Survey: Quasar Luminosity Function from Data Release 3 (2006, methodology): “We first construct a variance weighted mean quasar spectrum from the 16,713 DR1 quasars from Schneider et al. (2003) using the algorithm of Vanden Berk et al. (2001).”
• Soft X-Ray and Ultraviolet Emission Relations in Optically Selected AGN Samples (2005, background): “High-redshift AGNs are relatively rare (see, e.g., the SDSS DR1AGN catalog; Schneider et al. 2003), and consequently there are only eight z > 3 AGNs in medium-deep ROSAT pointings in our main sample.”
• THE DISCOVERY OF THE FIRST “CHANGING LOOK” QUASAR: NEW INSIGHTS INTO THE PHYSICS AND PHENOMENOLOGY OF ACTIVE GALACTIC NUCLEI (2014, background): “…(LaMassa et al. 2013a,b), which was initially reported in the 2001 Sloan Digital Sky Survey (SDSS) Data Release 1 (DR1; Abazajian et al. 2003), and was classified as a quasar in DR1, DR3, DR5 and DR7 based on its i-band luminosity and broad emission lines (Schneider et al. 2003, 2005, 2007, 2010).”
• The 2dF-SDSS LRG and QSO Survey: the QSO luminosity function at 0.4 < z < 2.6 (2009, methodology): “The photometric data used to select QSOs are the SDSS PSF magnitudes, so this will already limit the host galaxy flux to some extent (e.g. Schneider et al. 2003).”
• Average extinction curves and relative abundances for quasi-stellar object absorption-line systems at 1 ≤zabs < 2 (2006, methodology): “The QSOALS catalog based on DR1 spectra (Abazajian et al. 2003; Schneider et al. 2003) is used for the current paper, though the data are processed with the DR3 software (Abazajian et al. 2005).”
• A Near-Infrared Spectral Template for Quasars (2005, methodology): “The quasars selected for inclusion in this composite spectrumwere chosen from the SDSS-DR1 quasar catalog (Schneider et al. 2003), which contains 16,713 objects.”
• Active Galactic Nuclei in the Sloan Digital Sky Survey. II. Emission-Line Luminosity Function (2005, methodology): “Based on the general quasar color model (Schneider et al. 2002, 2003; Hopkins et al. 2004), we found g i 0:55 at around z 0:1.”
• Dust Reddening in Sloan Digital Sky Survey Quasars (2004, methodology): “This sample was matched to the Two Micron All Sky Survey (2MASS; Skrutskie et al. 1997) All-Sky Point Source Catalog using a matching radius of 300 (Schneider et al. 2003).”