VizieR Online Data Catalog: SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
Abstract
In this paper, we detail DR16Q, the final SDSS-IV/eBOSS quasar catalog. The catalog consists of two subcatalogs: the DR16Q superset containing 1440615 observations targeted as quasars, and the quasar-only set containing 750414 quasars. The quasar-only catalog includes 225082 new quasars observed after the release of DR14Q, a 42% increase in the catalog size. We estimate the quasar-only catalog to be 99.8% complete with 0.3%-1.3% contamination. We include automated pipeline redshifts for all quasars observed as part of SDSS-III/IV and confident visual inspection redshifts for 320161 quasars.
Spectroscopy for SDSS-IV/eBOSS was conducted using the BOSS spectrographs on the 2.5m Sloan Telescope. Two spectrographs each recorded data from 500 fibers on a 2k CCD with square 24um pixels and a wavelength range of 3600-10400Å at a spectral resolution of λ/Δλ~2000. DR16Q includes spectra obtained using both the BOSS spectrographs and the SDSS-I/II spectrographs (3800-9100Å) and SDSS-III/BOSS over the four SDSS campaigns (MJD 51608-58543; March 2000-March 2019). (3 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- October 2020
- Bibcode:
- 2020yCat.7289....0L
- Keywords:
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- Surveys;
- QSOs;
- Spectra: optical;
- Redshifts;
- Cross identifications