New constraints on the 1.4GHz source counts Virtual Observatory Resource

Authors
  1. Bonato M.
  2. Prandoni I.
  3. De Zotti G.
  4. Brienza M.
  5. Morganti R.
  6. Vaccari M.
  7. Published by
    CDS
Abstract

We present a study of the 1173 sources brighter than S_1.4GHz_=120{mu}Jy detected over an area of ~1.4deg^2^ in the Lockman Hole field. Exploiting the multiband information available in this field for ~79 per cent of the sample, sources have been classified into radio loud (RL) active galactic nuclei (AGNs), star-forming galaxies (SFGs), and radio quiet (RQ) AGNs, using a variety of diagnostics available in the literature. Exploiting the observed tight anticorrelations between IRAC band 1 or band 2 and the source redshift we could assign a redshift to 177 sources missing a spectroscopic measurement or a reliable photometric estimate. A Monte Carlo approach was used to take into account the spread around the mean relation. The derived differential number counts and luminosity functions at several redshifts of each population show a good consistency with models and with earlier estimates made using data from different surveys and applying different approaches. Our results confirm that below ~300{mu}Jy SFGs+RQ AGNs overtake RL AGNs that dominate at brighter flux densities. We also confirm earlier indications of a similar evolution of RQ AGNs and SFGs. Finally, we discuss the angular correlation function of our sources and highlight its sensitivity to the criteria used for the classification.

Keywords
  1. active-galactic-nuclei
  2. galaxies
  3. millimeter-astronomy
  4. submillimeter-astronomy
  5. radio-sources
  6. redshifted
Bibliographic source Bibcode
2021MNRAS.500...22B
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/500/22
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/500/22

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/500/22
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/500/22
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/500/22
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/J/MNRAS/500/22/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/500/22/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/500/22/table2?

History

2023-11-09T08:04:39Z
Resource record created
2023-11-09T07:04:58Z
Updated
2023-11-09T08:04:39Z
Created

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