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.

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

References in corpus (6)

• The Sloan Digital Sky Survey Quasar Catalog IV. Fifth Data Release
• Radio sources in the 6dFGS: Local luminosity functions at 1.4 GHz for star-forming galaxies and radio-loud AGN
• The Molonglo Galactic Plane Survey (MGPS-2): Compact Source Catalogue
• Think Outside the Color Box: Probabilistic Target Selection and the SDSS-XDQSO Quasar Targeting Catalog
• The 2dF-SDSS LRG and QSO Survey: The spectroscopic QSO catalogue
• The Serendipitous Extragalactic X-Ray Source Identification (SEXSI) Program. III. Optical Spectroscopy

Cited by in corpus (45)

• Active Galactic Nuclei: what's in a name?
• The faint radio sky: radio astronomy becomes mainstream
• XQ-100: A legacy survey of one hundred 3.5 < z < 4.5 quasars observed with VLT/XSHOOTER
• General Physical Properties of CGRaBS Blazars
• Photometric redshifts for the next generation of deep radio continuum surveys - I: Template fitting
• MUSE Analysis of Gas around Galaxies (MAGG) -- I: Survey design and the environment of a near pristine gas cloud at z~3.5
• On the nature of bright compact radio sources at z>4.5
• Searching for changing-state AGNs in massive datasets -- I: applying deep learning and anomaly detection techniques to find AGNs with anomalous variability behaviours
• The Extremely Luminous Quasar Survey (ELQS) in the SDSS footprint I.: Infrared Based Candidate Selection
• The Extremely Luminous Quasar Survey in the Sloan Digital Sky Survey footprint. III. The South Galactic Cap Sample and the Quasar Luminosity Function at Cosmic Noon
• Finding Quasars behind the Galactic Plane. I. Candidate Selections with Transfer Learning
• RESOLVE and ECO: Finding Low-Metallicity $z\sim 0$ Dwarf AGN Candidates Using Optimized Emission-Line Diagnostics
• Bright end of the luminosity function of high-mass X-ray binaries: contributions of hard, soft and supersoft sources
• 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
• Detection of a White Dwarf companion to a Blue Straggler Star in the outskirts of globular cluster NGC 5466 with the Ultraviolet Imaging Telescope (UVIT)
• Discovery of a very young high-mass X-ray binary associated with the supernova remnant MCSNRJ0513-6724 in the LMC
• The Extremely Luminous Quasar Survey in the Pan-STARRS 1 Footprint (PS-ELQS)
• The QUEST-La Silla AGN Variability Survey: selection of AGN candidates through optical variability
• Ultra-luminous quasars at redshift $z>4.5$ from SkyMapper
• The bright end of the infrared luminosity functions and the abundance of hyperluminous infrared galaxies
• A low-frequency study of recently identified double-double radio galaxies
• A Systematic Exploration of Kilonova Candidates from Neutron Star Mergers During the Third Gravitational Wave Observing Run
• A WISE view on extreme AGB stars
• Swift-XRT Follow-up of Gravitational Wave Triggers in the Second Advanced LIGO/Virgo Observing Run
• ELDAR, a new method to identify AGN in multi-filter surveys: the ALHAMBRA test-case
• Identifying the 3FHL catalog: I. Archival Swift Observations and Source Classification
• Radio Variable and Transient Sources on Minute Timescales in the ASKAP Pilot Surveys
• The VMC Survey -- XLIX. Discovery of a population of quasars dominated by nuclear dust emission behind the Magellanic Clouds
• Tracing the 10${}^7$K Warm-Hot Intergalactic Medium with UV absorption lines
• Catalog of Candidates for Quasars at 3 < z < 5.5 Selected among X-Ray Sources from the 3XMM-DR4 Survey of the XMM-Newton Observatory
• Overdensity of galaxies in the environment of quasar pairs
• A Closer Look at Two of the Most Luminous Quasars in the Universe
• Observational nonstationarity of AGN variability: The only way to go is down!
• Optical Spectroscopy of Candidates for Quasars at 3<z<5.5 from the XMM-Newton X-ray survey. A distant X-ray Quasar at z=5.08
• The effect of our local motion on the Sandage-Loeb test of the cosmic expansion
• Variability and transient search in the SUDARE-VOICE field: a new method to extract the light curves
• Redshifts of radio sources in the Million Quasars Catalogue from machine learning
• Multiwavelength survey of X-ray sources in the Sculptor Dwarf Spheroidal Galaxy
• Properties of environment around AGN and luminous galaxy pairs through HSC wide survey
• Quasar catalogue for the astrometric calibration of the forthcoming ILMT survey
• Spectroscopic Confirmation of Two X-ray Diffuse and Massive Galaxy Clusters at Low Redshift
• Spatially Dependent Photometric Activity of M dwarfs in the Solar Cylinder
• Strong correlation between FeII/MgII ratio and Eddington ratio of type 1 Active galactic nuclei
• New blazar candidates from the 9Y-MST catalogue detected at energies higher than 10 GeV