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

Document Object Identifer DOI

bibcode:2015yCat.7273....0F

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?