The Half Million Quasars (HMQ) Catalogue

Abstract

A quasar catalogue is presented with a total of 510764 objects including 424748 type 1 QSOs and 26623 type 1 AGN complete from the literature to 25 January 2015. Also included are 25015 high-confidence SDSS-based photometric quasars with radio/X-ray associations, 1595 BL Lac objects, and 32783 type 2 objects. Each object is displayed with arcsecond-accurate astrometry, red and blue photometry, redshift, citations, and radio and X-ray associations where present. Also, 114 new spectroscopically confirmed quasars are presented.

arXiv comment14 pages, 11 tables, 5 figures. Accepted for publication by Publications of the Astronomical Society of Australia (PASA)

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• A Faint Flux-Limited Lyman Alpha Emitter Sample at $z\sim 0.3$
• The ASKAP-EMU Early Science Project: 888 MHz Radio Continuum Survey of the Large Magellanic Cloud
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• A Systematic Exploration of Kilonova Candidates from Neutron Star Mergers During the Third Gravitational Wave Observing Run
• Gaia Data Release 2. Short-timescale variability processing and analysis
• Universality in the Random Walk Structure Function of Luminous Quasi-Stellar Objects
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• A WISE view on extreme AGB stars
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• Search for transient optical counterparts to high-energy IceCube neutrinos with Pan-STARRS1
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• Tracing the 10${}^7$K Warm-Hot Intergalactic Medium with UV absorption lines
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