VizieR Online Data Catalog: Extreme quasar X-ray variability (Timlin+, 2020)
Abstract
Serendipitous Chandra observations of SDSS quasars.
To assemble our quasar catalog, we combined the SDSS datarelease fourteen quasar catalog (DR14Q; Paris et al., 2018A&A...613A..51P, Cat. VII/286) and the large quasar catalog from Richards et al. (2015, Cat. J/ApJS/219/39) which compiled other spectroscopically-confirmed quasars that overlap the SDSS imaging footprint. (1 data file).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- September 2020
- Bibcode:
- 2020yCat..74984033T
- Keywords:
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- Active gal. nuclei;
- QSOs;
- X-ray sources