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The relationship between star formation rate and radio synchrotron luminosity at 0 < z < 2

We probe the relationship between star formation rate (SFR) and radio synchrotron luminosity in galaxies at 0 < z < 2 within the northern Spitzer Wide-area Infrared Extragalactic survey (SWIRE) fields, in order to investigate some of the assumptions that go into calculating the star formation history of the Universe from deep radio observations. We present new 610-MHz Giant...

A 610-MHz survey of the Lockman Hole with the Giant Metrewave Radio Telescope – I. Observations, data reduction and source catalogue for the central 5 deg2

We present observations of the Lockman Hole taken at 610 MHz with the Giant Metrewave Radio Telescope (GMRT). Twelve pointings were observed, covering a total area of ∼5 deg2 with a resolution of 6 × 5 arcsec2, position angle +45°. The majority of the pointings have a rms noise of ∼60 μJy beam−1 before correction for the attenuation of the GMRT primary beam. Techniques used for...

A 610-MHz survey of the ELAIS-N1 field with the Giant Metrewave Radio Telescope – observations, data analysis and source catalogue

David A. Green 0 Julia M. Riley 0 Paul Alexander 0 0 Astrophysics Group, Cavendish Laboratory , 19 J. J. Thomson Avenue, Cambridge CB3 0HE A B S T R A C T Observations of the European Large-Area ISO

Deep 610-MHz Giant Metrewave Radio Telescope observations of the Spitzer extragalactic First Look Survey field – I. Observations, data analysis and source catalogue

Observations of the Spitzer extragalactic First Look Survey field taken at 610 MHz with the Giant Metrewave Radio Telescope are presented. Seven individual pointings were observed, covering a total area of ∼4 deg2 with a resolution of 5.8 × 4.7 arcsec2, PA 60°. The rms noise at the centre of the pointings is between 27 and 30 μJy before correction for the Giant Metrewave Radio...

The radio source count at 93.2 GHz from observations of 9C sources using AMI and CARMA

We present results from follow-up observations of a sample of 80 radio sources, originally detected as part of the 15.2-GHz Ninth Cambridge (9C) survey. The observations were carried out, close to simultaneously, at two frequencies: 15.7 GHz, using the Arcminute Microkelvin Imager (AMI) Large Array, and 93.2 GHz, using the Combined Array for Research in Millimeter-wave Astronomy...

10C survey of radio sources at 15.7 GHz – II. First results*

In a previous paper (Paper I), the observational, mapping and source-extraction techniques used for the Tenth Cambridge (10C) Survey of Radio Sources were described. Here, the first results from the survey, carried out using the Arcminute Microkelvin Imager Large Array (LA) at an observing frequency of 15.7 GHz, are presented. The survey fields cover an area of ≈27 deg2 to a flux...

Spectral ageing in a sample of 14 high-luminosity double radio sources

We use multifrequency observations of a sample of 14 high-luminosity 3C double radio sources in a discussion of their structures and spectral properties. The observations were made with the VLA at 1.4, 5 and 15 GHz and have resolutions of 0.4 or 1.2 arcsec. We interpret the spectra in terms of the ageing of the electron population, as in the related study by Alexander & Leahy...

Quasars from the 7C survey — I. Sample selection and radio maps

We describe the selection of candidate radio-loud quasars obtained by cross-matching radio source positions from the low-frequency (151-MHz) 7C survey with optical positions from five pairs of EO POSS-I plates scanned with the Cambridge Automatic Plate-measuring Machine (APM). The sky region studied is centred at RA 10h 28m, Dec.+41° and covers ≈0.057 sr. We present VLA...