Group of quasars Virtual Observatory Resource

Authors
  1. Clowes R.G.
  2. Campusano L.E.
  3. Published by
    CDS
Abstract

We have found evidence for a large, elongated group of at least ten quasars with largest dimension ~100-200h-1Mpc at z~1.3, in the direction of ESO/SERC field 927, which has the field centre (1950) 10h40m00s, 05deg00'00". There are probably further members that have not yet been observed. The morphology of the group seems to be like a clump, but there might be some sub-grouping on scales ~20h-1Mpc. The group is similar in size and number of quasars to that found by Crampton, Cowley & Hartwick (1989). The fact that two such groups are now known is evidence that the distribution of quasars is not so simple as was previously thought: at large scales (>10h-1Mpc) the majority of quasars may be distributed uniformly and at random, but rare, large groups also occur. The groups may be large physical structures, but a strong association with the large structures of galaxies seems doubtful.

Keywords
  1. quasars
  2. redshifted
Bibliographic source Bibcode
1991MNRAS.249..218C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/249/218
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/249/218
Document Object Identifer DOI
doi:10.26093/cds/vizier.72490218

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/249/218
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/249/218
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/249/218
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).
https://vizier.cds.unistra.fr/viz-bin/conesearch/0?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/249/218/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/249/218/table1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/0?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/249/218/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/249/218/table2?

History

1997-12-09T21:35:21Z
Resource record created
1997-12-09T21:35:21Z
Created
2013-03-04T07:05:38Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr