The Million Quasars (Milliquas) Catalogue, v6.4
Abstract
Announcing the release v6.4 of the Milliquas (Million Quasars) quasar catalogue which presents all published quasars to 11 December 2019, including SDSS-DR16. Its totals are 757,991 type-I QSOs/AGN and approx 1.1M high-confidence (80%+ likelihood) quasar candidates from SDSS-based & AllWISE photometric quasar catalogs, plus all-sky radio/X-ray associated candidates available only here. Type-II and Bl Lac objects are also included, plus candidates/galaxies with double radio lobes (so calculated), bringing the total count to 1,968,377. Gaia-DR2 astrometry is given for most objects. The catalogue is available on its home page and on NASA HEASARC.
- Publication:
-
arXiv e-prints
- Pub Date:
- December 2019
- DOI:
- 10.48550/arXiv.1912.05614
- arXiv:
- arXiv:1912.05614
- Bibcode:
- 2019arXiv191205614F
- Keywords:
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- Astrophysics - Astrophysics of Galaxies
- E-Print:
- Announcement only, 6 pages. Journal publication of Milliquas awaiting completion of SDSS-IV
