The Toronto Red-Sequence Cluster Survey: First Results

Abstract

The Toronto Red-Sequence Cluster Survey (TRCS) is a new galaxy cluster survey designed to provide a large sample of optically selected 0.1 < z < 1.4 clusters. The planned survey data is 100 square degrees of two color (R and z&#39;) imaging, with a 5-sigma depth ~2 mag past M* at z=1. The primary scientific drivers of the survey are a derivation of Omega_m and sigma_8 (from N(M,z) for clusters) and a study of cluster galaxy evolution with a complete sample. This paper gives a brief outline of the TRCS survey parameters and sketches the methods by which we intend to pursue the main scientific goals, including an explicit calculation of the expected survey completeness limits. Some preliminary results from the first set of data (~6 deg^2) are also given. These preliminary results provide new examples of rich z~1 clusters, strong cluster lensing, and a possible filament at z~1.