The WSRT 1.4 GHz amalgamated source counts

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Extragalactic Radio Sources, Flux Density, Radio Galaxies, Red Shift, Active Galactic Nuclei, Radio Telescopes, Very Large Array (Vla)

Scientific paper

The authors present the extragalactic radio source count at 1.4 GHz, based on all high-latitude, high-declination (parts of) WSRT surveys published up to 1985. The main reason for the reevaluation of the source counts from these surveys is the recently obtained result on the angular sizes of sources below ≡10 mJy, which necessitates a rediscussion of so-called "resolution-corrections" that were applied in some of the earlier surveys. The authors also combine the resulting WSRT source count with those obtained from recent 1.4 GHz WSRT surveys down to a limit of ≡100 μJy, and with existing data at flux densities above ≡140 mJy. This combined count will serve as a very reliable integral constraint for model extrapolations of the spatial density of radio galaxies.

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