Early-type galaxies at z<0.04 star formation rates Virtual Observatory Resource

Authors
  1. Vaddi S.
  2. O'Dea C.P.
  3. Baum S.A.
  4. Whitmore S.
  5. Ahmed R.
  6. Pierce K.
  7. Leary S.
  8. Published by
    CDS
Abstract

We address the relation between star formation and active galactic nucleus (AGN) activity in a sample of 231 nearby (0.0002<z<0.0358) early-type galaxies by carrying out a multi-wavelength study using archival observations in the UV, IR, and radio. Our results indicate that early-type galaxies in the current epoch are rarely powerful AGNs, with P<10^22^W/Hz for a majority of the galaxies. Only massive galaxies are capable of hosting powerful radio sources while less massive galaxies are hosts to lower radio power sources. Evidence of ongoing star formation is seen in approximately 7% of the sample. The star formation rate (SFR) of these galaxies is less than 0.1M_{sun}_/yr. They also tend to be radio faint (P<10^22^W/Hz). There is a nearly equal fraction of star-forming galaxies in radio faint (P<10^22^W/Hz) and radio bright galaxies (P>=10^22^W/Hz) suggesting that both star formation and radio mode feedback are constrained to be very low in our sample. We notice that our galaxy sample and the Brightest Cluster Galaxies follow similar trends in radio power versus SFR. This may be produced if both radio power and SFR are related to stellar mass.

Keywords
  1. galaxies
  2. infrared-photometry
  3. ultraviolet-photometry
  4. radio-sources
Bibliographic source Bibcode
2016ApJ...818..182V
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/818/182
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/818/182
Document Object Identifer DOI
doi:10.26093/cds/vizier.18180182

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/818/182
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/818/182
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/818/182
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/818/182/galaxies?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/818/182/galaxies?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/818/182/galaxies?

History

2016-06-14T15:59:56Z
Resource record created
2016-06-14T15:59:56Z
Created
2017-07-06T06:25:51Z
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