The Half Million Quasars (HMQ) catalogue Virtual Observatory Resource

Authors

1. Flesch E.W.

Published by

CDS

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.

Keywords

1. quasars
2. active-galactic-nuclei
3. redshifted
4. apparent-magnitude

Bibliographic source Bibcode

2015PASA...32...10F

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/VII/273

IVOA Identifier IVOID

ivo://CDS.VizieR/VII/273

Access

Web browser access HTML

http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=VII/273
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=VII/273
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=VII/273

IVOA Table Access TAP

http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

IVOA Cone Search SCS

For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/VII/273/hmq?
https://vizier.iucaa.in/viz-bin/conesearch/VII/273/hmq?
http://vizieridia.saao.ac.za/viz-bin/conesearch/VII/273/hmq?