THE SLOAN DIGITAL SKY SURVEY QUASAR CATALOG. V. SEVENTH DATA RELEASE

By D. Schneider, Gordon Richards, P. Hall, M. Strauss, S. Anderson, Todd Boroson, N. Ross, Yue Shen, W. N. Brandt, Xiaohui Fan and 38 more. 2010

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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 105,783 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 Mi = −22.0 (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 or have interesting/complex absorption features, are fainter than i ≈ 15.0, and have highly reliable redshifts. The catalog covers an area of ≈9380 deg2. 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 0.03 mag, 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 3800–9200 Å 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.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/0792b37c25c1ef62daff74dc68f8a021238a5b71

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Citations in the corpus

THE NINTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY: FIRST SPECTROSCOPIC DATA FROM THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY (2012, methodology): “Finally, given the improved throughput of the BOSS spectrographs and extended blue coverage, we reobserved all previously known z > 2.15 quasars (most of which were discovered by SDSS-I/II; see Schneider et al. 2010) to obtain higher S/N in the Lyman-α forest.”
The Half Million Quasars (HMQ) Catalogue (2015, background): “430 from SDSS-DR7 (Abazajian et al. 2009) which classified these as stars or non-AGN galaxies, confirmed by their exclusion from SDSS-DR7Q (Schneider et al. 2010).”
UNIFICATION OF LUMINOUS TYPE 1 QUASARS THROUGH C iv EMISSION (2010, methodology): “Facilities: Sloan APPENDIX A simplified version of the query that was used to merge the DR7 spectroscopic pipeline with the formal Schneider et al. (2010) DR7 quasar catalog is given as an example below.”
A refined measurement of the mean transmitted flux in the Lyα forest over 2 < z < 5 using composite quasar spectra (2012, methodology): “We constructed 26 composite quasar spectra using a total of 6065 individual spectra from the SDSS DR7 quasar catalogue (Schneider et al. 2010).”
THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY: QUASAR TARGET SELECTION FOR DATA RELEASE NINE (2011, methodology): “Figure 11 shows the redshift distribution of BOSS quasars from the first year, and compares it with that from the SDSS DR7 quasar sample (Schneider et al. 2010) and the 2SLAQ survey (Croom et al. 2009).”
THE z = 5 QUASAR LUMINOSITY FUNCTION FROM SDSS STRIPE 82 (2012, methodology): “Schneider et al. (2010) present a catalog of over 100,000 spectroscopically confirmed quasars drawn from ≈ 9380 deg2 of the DR7 spectroscopic footprint (hereafter DR7QSO).”
Active galactic nuclei: what’s in a name? (2017, methodology): “Hopkins et al. (2007) combined the best of both worlds from various multi-wavelength surveys to create a bolometric LF. Recent works, however (e.g. Assef et al. 2011; Ross et al. 2013; McGreer et al. 2013), have shown that the evolution of the break luminosity (where the slope of the LF changes rapi”
A DESCRIPTION OF QUASAR VARIABILITY MEASURED USING REPEATED SDSS AND POSS IMAGING (2011, methodology): “When we compare pairs of observations, we use the secondary imaging observation with the largest time lag from the primary imaging observation listed in the DR7 Quasar Catalog, for a total of two observations per quasar.”
Now You See It, Now You Don't: The Disappearing Central Engine of the Quasar J1011+5442 (2015, background): “98+544206.4 (hereafter J1011+5442), is a z = 0.246 quasar initially observed for spectroscopy by the SDSS in early 2003 that appeared in the third, fifth, and seventh SDSS quasar catalogs (Schneider et al. 2005, 2007, 2010).”
Erratum: Updating quasar bolometric luminosity corrections (2012, methodology): “We compared our sample in observed parameter space to the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) quasar catalog (Schneider et al. 2010).”
Planck 2013 results. XI. All-sky model of thermal dust emission (2013, methodology): “We used the final edition of the SDSS-II quasar catalogue (Schneider et al. 2010) based on the seventh SDSS data release (Abazajian et al. 2009).”
COMPARING SINGLE-EPOCH VIRIAL BLACK HOLE MASS ESTIMATORS FOR LUMINOUS QUASARS (2012, methodology): “Sample Selection We select our targets from the SDSS DR7 quasar catalog (e.g., Schneider et al. 2010; Shen et al. 2011) for follow-up near-IR spectroscopy with the following two criteria: • redshift between 1.5 and 2.2 and avoiding redshift ranges where the Hβ and Hα lines fall in the telluric…”
Baryon acoustic oscillations from the cross-correlation of Lyα absorption and quasars in eBOSS DR14 (2019, methodology): “Visual inspection of quasar spectra was an important procedure during the first three generations of SDSS to correct for mis-classifications of object type and inaccurate redshift determinations by the pipeline (Schneider et al. 2010; Pâris et al. 2017).”
The Sloan Digital Sky Survey quasar catalog: ninth data release (2012, methodology): “…the Large Bright Quasar Survey (LBQS, Morris et al. 1991; Hewett et al. 1995); the 2dF Quasar Redshift Survey (2QZ; Boyle et al. 2000; Croom et al. 2001) and the successive releas s of the Sloan Digital Sky Survey (SDSS, York et al. 2000) Quasar Catalogs (e.g., Schneider et al. 2010, for DR7).”
A strong redshift dependence of the broad absorption line quasar fraction (2010, methodology): “The quasar sample consists of 91 665 objects from the SDSS DR6 spectroscopic survey, including 77 392 quasars in the Schneider et al. (2007) DR5 quasar catalogue that are retained in the later DR7 quasar catalogue of Schneider et al. (2010).”