SuperCLASS – I. The super cluster assisted shear survey: Project overview and data release 1
SuperCLASS – I. The super cluster assisted shear survey: Project overview and data release 1
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DOI：
10.1093/mnras/staa709
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发表时间：
2020-02
影响因子：
4.8
通讯作者：
R. Battye;Michael L. Brown;C. Casey;I. Harrison;N. Jackson;I. Smail;R. Watson;C. Hales;C. Hales;S. Manning;C. Hung;C. Riseley;C. Riseley;F. Abdalla;M. Birkinshaw;C. Demetroullas;S. Chapman;R. Beswick;T. Muxlow;A. Bonaldi;S. Camera;T. Hillier;S. Kay;A. Peters;D. Sanders;Daniel B. Thomas;A. Thomson;B. Tunbridge;L. Whittaker
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文献类型：
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作者：
R. Battye;Michael L. Brown;C. Casey;I. Harrison;N. Jackson;I. Smail;R. Watson;C. Hales;C. Hales;S. Manning;C. Hung;C. Riseley;C. Riseley;F. Abdalla;M. Birkinshaw;C. Demetroullas;S. Chapman;R. Beswick;T. Muxlow;A. Bonaldi;S. Camera;T. Hillier;S. Kay;A. Peters;D. Sanders;Daniel B. Thomas;A. Thomson;B. Tunbridge;L. Whittaker
超星系团辅助剪切调查(超类)是使用e-Merlin干涉阵列的传统方案。目的是在L波段(1.4千兆赫)观测天空到R.M.S。在以阿贝尔981超星系团为中心的$\sim 1\，^2$区域上的$7，Mu，$BEAM−1。该项目的主要科学目标是：(I)探测射电中弱透镜的影响，为与平方公里阵列进行类似的测量做准备；(Ii)对z∼1的恒星形成和活动星系核活动进行无灭绝普查。在介绍第一次数据发布之前，我们概述该项目，包括科学目标和多波长覆盖范围。我们已经分析了大约400小时的e-Merlin数据，从而创建了完整深度的数据版本1(DR1)马赛克$\sim 0.26\，^2$。这些观测得到了卡尔·G·詹斯基甚大天线阵(VLA)的补充射电观测，以及斯巴鲁、加拿大-法国-夏威夷和斯皮策望远镜拍摄的光学/近红外观测。主要数据产品是VLA探测到的887个源的目录，其中395个是通过e-Merlin探测到的，其中197个得到了解决。我们研究了这些源的大小、通量和光谱指数特性，发现它们与以前的研究是一致的。初步的光度红移，以及在射电数据中测量的星系形状的评估，以及在超星系团环境中探测宇宙切变的射电-光学互相关技术，都在配对文件中给出。
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 $7\, \mu {\rm Jy}\,$beam−1 over an area of $\sim 1\, {\rm deg}^2$ 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 $\sim 0.26\, {\rm deg}^2$ 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.