The Sloan Digital Sky Survey Quasar Catalog: Twelfth data release

By Iap Paris, P. Petitjean, Nic Ross, Adam D. Myers, E. Aubourg, A. Streblyanska, S. Bailey, Eric Armengaud, N. Palanque-Delabrouille, C. Yéche and 36 more. 2016

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We present the Data Release 12 Quasar catalog (DR12Q) from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. This catalog includes all SDSS-III/BOSS objects that were spectroscopically targeted as quasar candidates during the full survey and that are confirmed as quasars via visual inspection of the spectra, have luminosities M i [ z = 2] H 0 = 70 km s -1 Mpc -1 , Ω M = 0.3, and Ω Λ = 0.7), and either display at least one emission line with a full width at half maximum (FWHM) larger than 500 km s -1 or, if not, have interesting/complex absorption features. The catalog also includes previously known quasars (mostly from SDSS-I and II) that were reobserved by BOSS. The catalog contains 297 301 quasars (272 026 are new discoveries since the beginning of SDSS-III) detected over 9376 deg 2 with robust identification and redshift measured by a combination of principal component eigenspectra. The number of quasars with z > 2.15 (184 101, of which 167 742 are new discoveries) is about an order of magnitude greater than the number of z > 2.15 quasars known prior to BOSS. Redshifts and FWHMs are provided for the strongest emission lines (C iv, C iii], Mg ii). The catalog identifies 29 580 broad absorption line quasars and lists their characteristics. For each object, the catalog presents five-band ( u , g , r , i , z ) CCD-based photometry with typical accuracy of 0.03 mag together with some information on the optical morphology and the selection criteria. When available, the catalog also provides information on the optical variability of quasars using SDSS and Palomar Transient Factory multi-epoch photometry. The catalog also contains X-ray, ultraviolet, near-infrared, and radio emission properties of the quasars, when available, from other large-area surveys. The calibrated digital spectra, covering the wavelength region 3600–10 500 A at a spectral resolution in the range 1300 R < 2500, can be retrieved from the SDSS Catalog Archive Server. We also provide a supplemental list of an additional 4841 quasars that have been identified serendipitously outside of the superset defined to derive the main quasar catalog.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/0b811972dc7fe31e1ad430b8285c0455ab6bc96c

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Citations in the corpus

Quantitative Constraints on the Reionization History from the IGM Damping Wing Signature in Two Quasars at z > 7 (2018, methodology): “To construct the PCA model, we selected a sample of 12, 764 quasars from the BOSS DR12Q catalog (Pâris et al. 2017) at 2.09 < zpipe < 2.51 with S/N > 7 at λrest = 1290 Å, and fit each spectrum with an automated, piecewise spline fitting method designed to recover smooth quasar continua in the…”
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 Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations with Lyα Forests (2020, methodology): “Z_VIwas estimated on all quasar spectra in the DR12 sample (Pâris et al. 2017).”
The Sloan Digital Sky Survey Reverberation Mapping Project: Sample Characterization (2018, background): “BAL and mini-BAL quasars (e.g., Trump et al. 2006; Gibson et al. 2009; Pâris et al. 2017) were identified by their absorption troughs.”
Great Optically Luminous Dropout Research Using Subaru HSC (GOLDRUSH). I. UV Luminosity Functions at $z \sim 4-7$ Derived with the Half-Million Dropouts on the 100 deg$^2$ Sky (2017, background): “…Fèvre et al. 2013; Kashikawa et al. 2015; Kriek et al. 20154; Wang et al. 2016; Toshikawa et al. 2016; Momcheva et al. 2016; Matsuoka et al. 2016; Pâris et al. 2017; Tasca et al. 2017; Yang et al. 2017; Masters et al. 2017; Matsuoka et al. 2017; Shibuya et al. 2017b; R. Higuchi et al. in…”
The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: The Fourth and Fifth Data Releases (2018, background): “Among these identified quasars, 11,458 were independently discovered by LAMOST, 3296 of which were reported in SDSS DR12/14 quasar catalog (Pâris et al. 2017, 2018) after the survey began, while the other 8162 are new discoveries of LAMOST that have not been reported before (see Figure 15).”
The Sloan Digital Sky Survey Quasar Catalog: Fourteenth data release (2017, methodology): “A total of 79 487 quasars with no re-observation in SDSS-III/IV are included in the superset for DR14Q; A51, page 3 of 17 – SDSS-III/IV: we follow the definition of the superset as in Pâris et al. (2017).”
GLADE: A galaxy catalogue for multimessenger searches in the advanced gravitational-wave detector era (2018, positive): “…et al. 2014), the 2 Micron All-Sky Survey Extended Source Catalog4 (2MASS XSC, see Skrutskie et al. 2006), the 2MASS Photometric Redshift Catalog5 (2MPZ, see Bilicki et al. 2014), and the Sloan Digital Sky Survey quasar catalogue from the 12th data release6 (SDSS-DR12Q, see Pâris et al. 2016).”
Discovery of 21 New Changing-look AGNs in the Northern Sky (2017, background): “There are 346,464 quasars (Yang et al. 2017) in the SDSS Data Release 7 Quasar catalog (Schneider et al. 2010) and the Data Release 12 Quasar catalog (Pâris et al. 2017).”
The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release (2020, background): “The redshift and flag indicating an object is a quasar for objects appearing in DR12Q (Pâris et al. 2017), DR7Q (Schneider et al. 2010), and Hewett & Wild (2010).”
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”