GMRT 153MHz (2m) Radio Mini Survey I. Virtual Observatory Resource

Authors
  1. Williams W.L.
  2. Intema H.T.
  3. Rottgering H.J.A.
  4. Published by
    CDS
Abstract

We present wide area, deep, high-resolution 153MHz GMRT observations of the NOAO Bootes field, adding to the extensive, multi-wavelength data of this region. The observations, data reduction, and catalogue construction and description are described here. The seven pointings produced a final mosaic covering 30 square degrees with a resolution of 25". The rms noise is 2mJy/beam in the centre of the image, rising to 4-5mJy/beam on the edges, with an average of 3mJy/beam. Seventy-five per cent of the area has an rms <4mJy/beam. The extracted source catalogue contains 1289 sources detected at 5{sigma}, of which 453 are resolved. We estimate the catalogue to be 92 per cent reliable and 95 per cent complete at an integrated flux density limit of 14mJy. The flux densities and astrometry have been corrected for systematic errors. We calculate the differential source counts which are in good agreement with those in the literature and provide an important step forward in quantifying the source counts at these low frequencies and low flux densities. The GMRT 153MHz sources have been matched to the 1.4GHz NVSS and 327MHz WENSS catalogues and spectral indices were derived.

Keywords
  1. surveys
  2. active-galactic-nuclei
  3. radio-galaxies
Bibliographic source Bibcode
2013A&A...549A..55W
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/549/A55
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/549/A55
Document Object Identifer DOI
doi:10.26093/cds/vizier.35490055

Access

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/549/A55
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http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/549/A55/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
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https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/549/A55/table3?
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History

2012-12-19T20:28:09Z
Resource record created
2012-12-19T20:28:09Z
Created
2023-01-06T15:15:05Z
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