Lockman Hole North 3GHz catalogue Virtual Observatory Resource

Authors
  1. Vernstrom T.S.
  2. Scott D.
  3. Wall J.V.
  4. Condon J.J.
  5. Cotton W.D.,Kellermann K.I.
  6. Perley R.A.
  7. Published by
    CDS
Abstract

This is the second of two papers describing the observations and source catalogues derived from sensitive $3$-GHz images of the Lockman Hole North using the Karl G. Jansky Very Large Array. We describe the reduction and cataloguing process, which yielded an image with 8-arcsec resolution and instrumental noise of {sigma}_n=1.01uJy/beam rms (before primary beam corrections) and a catalogue of 558 sources detected above 5{sigma}_n. We include details of how we estimate source spectral indices across the 2GHz VLA bandwidth, finding a median index of -0.76+/-0.04. Stacking of source spectra reveals a flattening of spectral index with decreasing flux density. We present a source count derived from the catalogue. We show a traditional count estimate compared with a completely independent estimate made via a P(D) confusion analysis, and find very good agreement. Cross-matches of the catalogue with X-ray, optical, infrared, radio, and redshift catalogues are also presented. The X-ray, optical and infrared data, as well as AGN selection criteria allow us to classify 10 per cent as radio-loud AGN, 28 percent as radio-quiet AGN, and 58 per cent as star-forming galaxies, with only 4 per cent unclassified.

Keywords
  1. Surveys
  2. Radio sources
  3. Astronomical object identification
  4. Redshifted
Bibliographic source Bibcode
2016MNRAS.462.2934V
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/462/2934
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/462/2934

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/462/2934
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/462/2934
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/462/2934
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/462/2934/cat3ghz?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/462/2934/cat3ghz?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/462/2934/cat3ghz?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/462/2934/catcrx?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/462/2934/catcrx?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/462/2934/catcrx?

History

2016-08-30T08:39:28Z
Resource record created
2016-08-30T08:39:28Z
Created
2019-07-19T08:07:21Z
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