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SuperCLASS – I. The super cluster assisted shear survey: Project overview and data release 1

Whittaker, Lee; Tunbridge, Ben; Thomson, A.P.; Thomas, Daniel B.; Sanders, David B.; Peters, Aaron; Kay, Scott T.; Hillier, Tom; Camera, Stefano; Bonaldi, Anna; Muxlow, Tom W.B.; Beswick, Robert J.; Chapman, Scott; Demetroullas, Constantinos; Birkinshaw, Mark; Abdalla, Filipe B.; Riseley, Christopher J.; Hung, Chao-Ling; Manning, Sinclaire M.; Hales, Christopher A.; Watson, Robert A.; Smail, Ian; Jackson, Neal J.; Harrison, Ian; Casey, Caitlin M.; Brown, Michael L.; Battye, Richard A.

SuperCLASS – I. The super cluster assisted shear survey: Project overview and data release 1 Thumbnail


Authors

Lee Whittaker

Ben Tunbridge

A.P. Thomson

Daniel B. Thomas

David B. Sanders

Aaron Peters

Scott T. Kay

Tom Hillier

Stefano Camera

Anna Bonaldi

Tom W.B. Muxlow

Robert J. Beswick

Scott Chapman

Constantinos Demetroullas

Mark Birkinshaw

Filipe B. Abdalla

Christopher J. Riseley

Chao-Ling Hung

Sinclaire M. Manning

Christopher A. Hales

Robert A. Watson

Neal J. Jackson

Ian Harrison

Caitlin M. Casey

Michael L. Brown

Richard A. Battye



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 7μJybeam−1 over an area of ∼1deg2 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 multiwavelength coverage before presenting the first data release. We have analysed around 400 h of e-MERLIN data allowing us to create a Data Release 1 (DR1) mosaic of ∼0.26deg2 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 infrared 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.

Citation

Whittaker, L., Tunbridge, B., Thomson, A., Thomas, D. B., Sanders, D. B., Peters, A., …Battye, R. A. (2020). SuperCLASS – I. The super cluster assisted shear survey: Project overview and data release 1. Monthly Notices of the Royal Astronomical Society, 495(2), 1706-1723. https://doi.org/10.1093/mnras/staa709

Journal Article Type Article
Acceptance Date Feb 25, 2020
Online Publication Date Apr 2, 2020
Publication Date 2020-06
Deposit Date Jul 15, 2020
Publicly Available Date Jul 15, 2020
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 495
Issue 2
Pages 1706-1723
DOI https://doi.org/10.1093/mnras/staa709

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Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.





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