| Autor: |
Pâris, Isabelle, Petitjean, Patrick, Aubourg, Éric, Myers, Adam D., Streblyanska, Alina, Lyke, Brad W., Anderson, Scott F., Armengaud, Éric, Bautista, Julian, Blanton, Michael R., Blomqvist, Michael, Brinkmann, Jonathan, Brownstein, Joel R., Brandt, William Nielsen, Burtin, Étienne, Dawson, Kyle, de la Torre, Sylvain, Georgakakis, Antonis, Gil-Marín, Héctor, Green, Paul J. |
| Předmět: |
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| Zdroj: |
Astronomy & Astrophysics / Astronomie et Astrophysique; May2018, Vol. 613, p1-N.PAG, 17p |
| Abstrakt: |
We present the data release 14 Quasar catalog (DR14Q) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV). This catalog includes all SDSS-IV/eBOSS objects that were spectroscopically targeted as quasar candidates and that are confirmed as quasars via a new automated procedure combined with a partial visual inspection of spectra, have luminosities Mi [z = 2] < -20.5 (in a ▵ CDM cosmology with H0 = 70 km s-1 Mpc-1, ΩM = 0.3, and Ω▵ = 0.7), and either display at least one emission line with a full width at half maximum larger than 500 km s-1 or, if not, have interesting/complex absorption features. The catalog also includes previously spectroscopically-confirmed quasars from SDSS-I, II, and III. The catalog contains 526 356 quasars (144 046 are new discoveries since the beginning of SDSS-IV) detected over 9376 deg2 (2044 deg2 having new spectroscopic data available) with robust identification and redshift measured by a combination of principal component eigenspectra. The catalog is estimated to have about 0.5% contamination. Redshifts are provided for the Mg II emission line. The catalog identifies 21 877 broad absorption line quasars and lists their characteristics. For each object, the catalog presents five-band (u, g, r, i, z) CCDbased photometry with typical accuracy of 0.03 mag. 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 3610-10 140Å at a spectral resolution in the range 1300 < R < 2500, can be retrieved from the SDSS Science Archiver Server. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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