The Phoenix Deep Survey: 1.4-GHz source counts |
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Authors: | Hopkins Mobasher Cram & Rowan-Robinson |
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Institution: | Astrophysics Department, School of Physics, University of Sydney, NSW, Australia 2006,;Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ |
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Abstract: | We present the first results from the Phoenix Deep Survey, a multiwavelength survey of a 2° diameter region. Observations in the radio continuum at 1.4 GHz carried out with the Australia Telescope Compact Array are described. The catalogue of over 1000 radio sources compiled from these observations is analysed, and the source counts are presented. We model the observational source counts using a two-population model and published luminosity functions for these populations. Upon invoking luminosity and density evolution, we find that a luminosity evolution model best fits the radio observations, consistent with earlier work. The redshift distribution of the two galaxy populations investigated is also modelled and discussed. |
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Keywords: | surveys galaxies: evolution galaxies: luminosity function mass function radio continuum: galaxies |
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