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Paper: Clusters of Galaxies at 1 < z < 2 : The Spitzer Adaptation of the Red-Sequence Cluster Survey
Volume: 381, The Second Annual Spitzer Science Center Conference: Infrared Diagnostics of Galaxy Evolution
Page: 210
Authors: Wilson, G.; Muzzin, A.; Lacy, M.; Yee, H.; Surace, J.; Lonsdale, C.; Hoekstra, H.; Majumdar, S.; Gilbank, D.; Gladders, M.
Abstract: As the densest galaxy environments in the universe, clusters are vital to our understanding of the role that environment plays in galaxy formation and evolution. Unfortunately, the evolution of high-redshift cluster galaxies is poorly understood because of the “cluster desert” that exists at 1 < z < 2. The SpARCS collaboration is currently carrying out a 1-passband (z ) imaging survey which, when combined with the pre-existing ∼ 50 deg2 3.6μm Spitzer SWIRE Legacy Survey data, will efficiently detect hundreds of clusters in the cluster desert using an infrared application of the well-proven cluster red-sequence technique. We have already tested this 1-color (z −[3.6]) approach using a 6 deg2 “pilot patch” and shown it to be extremely successful at detecting clusters at 1 < z < 2. The clusters discovered in this project will be the first large sample of “nascent” galaxy clusters which connect the star-forming proto-cluster regions at z > 2 to the quiescent population at z < 1. The existing seven-passband Spitzer data (3.6, 4.5, 5.8, 8.0, 24, 70, 160 μm) will allow us to make the first measurements of the evolution of the cluster red-sequence, IR luminosity function, and the mid-IR dust-obscured star-formation rate for 1 < z < 2 clusters.
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