Star-forming compact groups Virtual Observatory Resource

Authors
  1. Hernandez-Fernandez J.D.
  2. Mendes de Oliveira C.
  3. Published by
    CDS
Abstract

We present a local sample (z<0.15) of 280 star-forming compact groups (SFCGs) of galaxies identified in the ultraviolet Galaxy Evolution EXplorer (GALEX) All-sky Imaging Survey (AIS). So far, just one prototypical example of SFCG, the Blue Infalling Group, has been studied in detail in the Local Universe. The sample of SFCGs is mainly the result of applying a Friends-of-Friends group finder in the space of celestial coordinates with a maximum linking-length of 1.5 arcmin and choosing groups with a minimum number of four members of bright UV-emitting 17<FUV<20.5 sources (mostly galaxies) from the GALEX/AIS catalogue. The result from the search are 280 galaxy groups composed by 226, 39, 11 and 4 groups of four, five, six and seven bright ultraviolet (UV) members, respectively. Only 59 of these 280 newly identified SFCGs have a previous catalogued group counterpart. Group redshifts are available for at least one member in 75 per cent of the SFCGs, and over 40 per cent of the SFCGs have redshifts measured for two or more galaxies. 26 of the SFCGs appear to be located in the infalling regions of clusters with known redshift. The SFCG sample presents a combination of properties different from the group samples studied up to now, such as low-velocity dispersions (sigma_l-o-s_~120km/s), small crossing-times (H_0_t_c_~0.05) and high star formation content (95 per cent of star-forming galaxies). This points to the SFCGs being in an evolutionary stage distinct from those groups selected in the optical and near-infrared ranges. Once redshifts are obtained to discard interlopers, SFCGs will constitute a unique sample of SFCGs.

Keywords
  1. galaxy-clusters
  2. redshifted
  3. ultraviolet-photometry
Bibliographic source Bibcode
2015MNRAS.453.1965H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/453/1965
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/453/1965

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/453/1965
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/453/1965
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/453/1965
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/J/MNRAS/453/1965/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/453/1965/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/453/1965/table1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/453/1965/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/453/1965/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/453/1965/table2?

History

2016-05-24T10:06:08Z
Resource record created
2016-05-24T10:06:08Z
Created
2019-08-27T14:54:42Z
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