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 square degrees

Abstract

We present observations of the Lockman Hole with the Giant Metrewave Radio Telescope (GMRT). Twelve pointings were observed, covering a total area of ~ five square degrees with a resolution of 6 x 5 arcsec, position angle +45deg. The majority of the pointings have an rms noise of 60 microJy/beam before correction for the attenuation of the GMRT primary beam. Techniques used for data reduction and production of a mosaicked image of the region are described, and the final mosaic is presented, along with a catalogue of 2845 sources detected above 6 sigma. Radio source counts are calculated at 610 MHz and combined with existing 1.4-GHz source counts, in order to show that pure luminosity evolution of the local radio luminosity functions for active galactic nuclei and starburst galaxies is sufficient to account for the two source counts simultaneously.

arXiv commentAccepted for publication in MNRAS. 8 pages, 8 figures, some with reduced image quality. Table 1 is available in full via http://www.mrao.cam.ac.uk/surveys/

References in corpus (35)

• The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
• The Spitzer Space Telescope Mission
• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• High Redshift Galaxies in the Hubble Deep Field. Color Selection and Star Formation History to z=4
• On the normalisation of the cosmic star formation history
• The Sixth Data Release of the Sloan Digital Sky Survey
• SCUBA: A common-user submillimetre camera operating on the James Clerk Maxwell Telescope
• SWIRE: The SIRTF Wide-area InfraRed Extragalactic Survey
• On the evolution of star forming galaxies
• The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- II. Submillimetre maps, catalogue and number counts
• XMM-Newton observation of the Lockman Hole; I. The X-ray Data
• Radio sources in the 6dFGS: Local luminosity functions at 1.4 GHz for star-forming galaxies and radio-loud AGN
• The Far- and Mid-Infrared/Radio Correlations in the Spitzer Extragalactic First Look Survey
• XMM-Newton observation of the Lockman Hole II. Spectral analysis
• Radio imaging of the Subaru/XMM-Newton Deep Field - I. The 100-microJy catalogue, optical identifications, and the nature of the faint radio source population
• Photometric redshifts in the SWIRE Survey
• The Phoenix Deep Survey: The 1.4 GHz microJansky catalogue
• The VLA-VIRMOS Deep Field I. Radio observations probing the microJy source population
• The FIR/Radio correlation of high redshift galaxies in the HDF-N
• A deep VLA survey at 6 cm in the Lockman Hole
• Second Data Release of the 6dF Galaxy Survey
• High-resolution radio observations of submillimetre galaxies
• Exploring the infrared/radio correlation at high redshift
• A catalogue of micro-Jy radio sources in northern legacy fields
• Radio Observations of the Hubble Deep Field South Region II: The 1.4 GHz Catalogue and Source Counts
• An Initial Look at the Far Infrared-Radio Correlation within Nearby Star-forming Galaxies using the Spitzer Space Telescope
• XMM-Newton observations of the Lockman Hole V: time variability of the brightest AGN
• A Deep VLA survey at 20cm of the ISO ELAIS survey regions
• XMM-Newton observations of the Lockman Hole: X-ray source catalogue and number counts
• The ATESP radio survey III. Source counts
• Radio Observations of the 13hr XMM/ROSAT Deep X-ray Survey Area
• A 610-MHz survey of the ELAIS-N1 field with the Giant Metrewave Radio Telescope - Observations, data analysis and source catalogue
• Deep 610-MHz GMRT observations of the Spitzer extragalactic First Look Survey field - I. Observations, data analysis and source catalogue
• The FIR-Radio Relationship at High and Low Redshift
• Using VO tools to investigate distant radio starbursts hosting obscured AGN in the HDF(N) region

Cited by in corpus (33)

• Predicting dust extinction from the stellar mass of a galaxy
• LOFAR 150-MHz observations of the Boötes field: Catalogue and Source Counts
• The Spitzer Extragalactic Representative Volume Survey (SERVS): survey definition and goals
• Deep multi-frequency radio imaging in the Lockman Hole using the GMRT and VLA: I. The nature of the sub-mJy radio population
• The Tiered Radio Extragalactic Continuum Simulation (T-RECS)
• The LOFAR Two Metre Sky Survey: Deep Fields Data Release 1 -- III. Host-galaxy identifications and value added catalogues
• Characterizing Foreground for redshifted 21-cm radiation: 150 MHz GMRT observations
• The Lockman Hole project: LOFAR observations and spectral index properties of low-frequency radio sources
• Improved foreground removal in GMRT 610 MHz observations towards redshifted 21-cm tomography
• The Lockman Hole Project: new constraints on the sub-mJy source counts from a wide-area 1.4 GHz mosaic
• The relationship between star formation rate and radio synchrotron luminosity at 0 < z < 2
• Contribution to the Diffuse Radio Background from Extragalactic Radio Sources
• GMRT observation towards detecting the Post-reionization 21-cm signal
• The faint source population at 15.7 GHz - I. The radio properties
• A deep / wide 1-2 GHz snapshot survey of SDSS Stripe 82 using the Karl G. Jansky Very Large Array in a compact hybrid configuration
• Radio source stacking and the infrared / radio correlation at microJy flux densities
• Wide-field broadband radio imaging with phased array feeds: a pilot multi-epoch continuum survey with ASKAP-BETA
• Deep U-B-V imaging of the Lockman Hole with the LBT. Observations and number counts
• The faint source population at 15.7 GHz - III. A high-frequency study of HERGs and LERGs
• The prevalence of core emission in faint radio galaxies in the SKA Simulated Skies
• Radio Weak Gravitational Lensing with VLA and MERLIN
• Diffuse Radio Emission from Galaxy Clusters in the LOFAR Two-metre Sky Survey Deep Fields
• Characterizing EoR foregrounds: A study of the Lockman Hole Region at 325 MHz
• The Allen Telescope Array Pi GHz Sky Survey - III: The ELAIS-N1, Coma, and Lockman Hole Fields
• The LOFAR Two Metre Sky Survey: Deep Fields. II. The ELAIS-N1 LOFAR deep field
• The faint radio source population at 15.7 GHz - II. Multi-wavelength properties
• Spectropolarimetry with the Giant Metrewave Radio Telescope at 610 MHz: a case study of two Southern Compact Group fields
• Deep observations of the Super-CLASS super-cluster at 325 MHz with the GMRT: the low-frequency source catalogue
• GMRT 610-MHz observations of the faint radio source population - and what these tell us about the higher-radio-frequency sky
• A Systematic Search for Reddest Far-infrared and Sub-millimeter Galaxies: revealing dust-embedded starbursts at high redshifts
• The faint radio source population at 15.7 GHz -- IV. The dominance of core emission in faint radio galaxies
• Modelling radio luminosity functions of radio-loud AGN by the cosmological evolution of supermassive black holes
• Milli-arcsecond properties of 10C sources in the Lockman Hole