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Title: SuperCLASS -- I. The Super CLuster Assisted Shear Survey: Project overview and Data Release 1
Authors: Battye, Richard A. 
Brown, Michael L. 
Casey, Caitlin M. 
Harrison, Ian 
Jackson, Neal J.F. 
Smail, Ian R. 
Watson, Robert A. 
Hales, Christopher A. 
Manning, Sinclaire M. 
Hung, Chao-Ling 
Riseley, Christopher John 
Abdalla, Fillipe Batoni 
Birkinshaw, Mark 
Demetroullas, Constantinos 
Chapman, Scott 
Beswick, Robert J. 
Muxlow, Thomas W.B. 
Bonaldi, Anna 
Camera, Stefano 
Hillier, Tom 
Kay, Scott T. 
Peters, Aaron 
Sanders, David B. 
Thomas, Daniel B. 
Thomson, Alasdair P. 
Tunbridge, Ben 
Whittaker, Lee 
Major Field of Science: Natural Sciences
Field Category: Physical Sciences
Keywords: Galaxies;Evolution;Large-scale structure of Universe;Cosmology;Observations;Radio continuum
Issue Date: Jun-2020
Source: Monthly Notices of the Royal Astronomical Society, 2020, vol. 495, no. 2, pp. 1706 - 1723
Volume: 495
Issue: 2
Start page: 1706
End page: 1723
Journal: Monthly Notices of the Royal Astronomical Society 
Abstract: The SuperCLuster Assisted Shear Survey (SuperCLASS) is a legacy programme using the e-MERLIN interferometric array. The aim is to observe the sky at L-band (1.4 GHz) to a r.m.s. of 7 uJy per beam over an area of ~1 square degree centred on the Abell 981 supercluster. The main scientific objectives of the project are: (i) to detect the effects of weak lensing in the radio in preparation for similar measurements with the Square Kilometre Array (SKA); (ii) an extinction free census of star formation and AGN activity out to z~1. In this paper we give an overview of the project including the science goals and multi-wavelength coverage before presenting the first data release. We have analysed around 400 hours of e-MERLIN data allowing us to create a Data Release 1 (DR1) mosaic of ~0.26 square degrees to the full depth. These observations have been supplemented with complementary radio observations from the Karl G. Jansky Very Large Array (VLA) and optical/near infra-red observations taken with the Subaru, Canada-France-Hawaii and Spitzer Telescopes. The main data product is a catalogue of 887 sources detected by the VLA, of which 395 are detected by e-MERLIN and 197 of these are resolved. We have investigated the size, flux and spectral index properties of these sources finding them compatible with previous studies. Preliminary photometric redshifts, and an assessment of galaxy shapes measured in the radio data, combined with a radio-optical cross-correlation technique probing cosmic shear in a supercluster environment, are presented in companion papers.
ISSN: 1365-2966
DOI: 10.1093/mnras/staa709
Rights: © 2020 The Author(s)
Attribution-NonCommercial-NoDerivatives 4.0 International
Type: Article
Affiliation : University of Manchester 
University of Texas at Austin 
University of Oxford 
Durham University 
National Radio Astronomy Observatory 
Newcastle University 
Università degli Studi di Bologna 
Istituto di Radioastronomia 
CSIRO Astronomy and Space Science 
University College London 
H.H. Willis Physics Laboratory 
Cyprus University of Technology 
Dalhousie University 
SKA Organization 
Universita degli Studi di Torino 
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