The TexOx Survey of Radio-Selected Galaxy Clusters

Steve Croft; Steve Rawlings; Gary J. Hill; Pamela L. Gay; Joseph R. Tufts

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The TexOx Survey of Radio-Selected Galaxy Clusters

Steve Croft·Steve Rawlings·Gary J. Hill·Pamela L. Gay·Joseph R. Tufts

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Abstract

We present some initial results from the TexOx (Texas-Oxford) Cluster (TOC) survey - a new method of selecting distant galaxy clusters. The cosmic evolution of the radio source population suggests that some massive clusters at high redshift will contain several radio-loud AGN. We searched for extreme over-densities at ~mJy levels in 7' x 7' boxes within the NVSS radio catalogue, covering a large (~1100 square degree) sky area. We have acquired optical images for ~130 cluster candidates, and followed up a subset of these with the VLA, and with Calar Alto near-IR imaging. Ryle Telescope observations have yielded at least one Sunyaev-Zel'dovich (SZ) detection of a massive z~1 system. Spectroscopic follow-up with 8-m class telescopes is in progress.

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Steve Croft, Steve Rawlings, Gary J. Hill, Pamela L. Gay, Joseph R. Tufts. 2001-10-04. The TexOx Survey of Radio-Selected Galaxy Clusters. https://arxiv.org/abs/astro-ph/0110119

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