A sample of mJy radio sources at 1.4 GHz in the Lynx and Hercules fields – I. Radio imaging, multicolour photometry and spectroscopy |
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| Authors: | E E Rigby I A G Snellen P N Best |
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| Institution: | SUPA, University of Edinburgh, Institute for Astronomy, Royal Observatory, Edinburgh EH9 3HJ;Leiden Observatory, Leiden University, Niels Bohrweg 2, NL-2300RA Leiden, the Netherlands |
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| Abstract: | With the goal of identifying high-redshift radio galaxies with Fanaroff–Riley class I (FR I) classification, here are presented high-resolution, wide-field radio observations, near-infrared and optical imaging and multi-object spectroscopy of two fields of the Leiden–Berkeley Deep Survey. These fields, Hercules.1 and Lynx.2, contain a complete sample of 81 radio sources with S 1.4 GHz > 0.5 mJy within 0.6 deg2. This sample will form the basis for a study of the population and cosmic evolution of high-redshift, low-power, FR I radio sources which will be presented in Paper II. Currently, the host galaxy identification fraction is 86 per cent with 11 sources remaining unidentified at a level of r '≥ 25.2 mag (Hercules; four sources) or r '≥ 24.4 mag (Lynx; seven sources) or K ≳ 20 mag . Spectroscopic redshifts have been determined for 49 per cent of the sample and photometric redshift estimates are presented for the remainder of the sample. |
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| Keywords: | galaxies: active galaxies: distances and redshifts galaxies: evolution galaxies: photometry radio continuum: galaxies |
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