Compact group galaxies UV and IR SFR Virtual Observatory Resource

Authors
  1. Lenkic L.
  2. Tzanavaris P.
  3. Gallagher S.C.
  4. Desjardins T.D.
  5. Walker L.M.,Johnson K.E.
  6. Fedotov K.
  7. Charlton J.
  8. Hornschemeier A.E.
  9. Durrell P.R.,Gronwall C.
  10. Published by
    CDS
Abstract

Compact groups of galaxies provide insight into the role of low-mass, dense environments in galaxy evolution because the low velocity dispersions and close proximity of galaxy members result in frequent interactions that take place over extended time-scales. We expand the census of star formation in compact group galaxies by Tzanavaris et al. (2010, Cat. J/ApJS/212/9) and collaborators with Swift UVOT, Spitzer IRAC and MIPS 24{mu}m photometry of a sample of 183 galaxies in 46 compact groups. After correcting luminosities for the contribution from old stellar populations, we estimate the dust-unobscured star formation rate (SFR_UV_) using the UVOT uvw2 photometry. Similarly, we use the MIPS 24 {mu}m photometry to estimate the component of the SFR that is obscured by dust (SFR_IR_). We find that galaxies which are MIR-active (MIR-'red'), also have bluer UV colours, higher specific SFRs, and tend to lie in HI-rich groups, while galaxies that are MIR-inactive (MIR-'blue') have redder UV colours, lower specific SFRs, and tend to lie in HI-poor groups. We find the SFRs to be continuously distributed with a peak at about 1M_{sun}_/yr, indicating this might be the most common value in compact groups. In contrast, the specific SFR distribution is bimodal, and there is a clear distinction between star-forming and quiescent galaxies. Overall, our results suggest that the specific SFR is the best tracer of gas depletion and galaxy evolution in compact groups.

Keywords
  1. galaxy-clusters
  2. galaxies
  3. photometry
  4. infrared-photometry
  5. ultraviolet-photometry
Bibliographic source Bibcode
2016MNRAS.459.2948L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/459/2948
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/459/2948
Document Object Identifer DOI
doi:10.26093/cds/vizier.74592948

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/459/2948
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/459/2948
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/459/2948
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/459/2948/groups?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/459/2948/groups?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/459/2948/groups?

History

2017-09-01T11:03:49Z
Resource record created
2017-09-01T11:03:49Z
Created
2024-08-16T20:16:52Z
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