VizieR Online Data Catalog: SDSS quasar catalog: twelfth data release (Paris+, 2017)
Abstract
We present the final quasar catalog of the SDSS-III/BOSS survey resulting from five years of observations. The catalog, which we call "DR12Q", contains 297301 quasars, 184101 of which have z>2.15. We provide robust identification from visual inspection and refined redshift measurements based on the result of a principal component analysis of the spectra. The present catalog contains about 80% more quasars than our previous release (Paris et al., 2014, Cat. VII/270). As part of DR12Q, we also provide a catalog of 29580 BAL quasars and their properties. Spectroscopic line measurements are provided together with multi-wavelength matching with GALEX, 2MASS, UKIDSS, WISE, FIRST, RASS and XMM-Newton observations.
(8 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- June 2017
- Bibcode:
- 2017yCat.7278....0P
- Keywords:
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- Surveys;
- QSOs;
- Active gal. nuclei;
- Spectroscopy