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Paper: Photometric Redshifts to Determine Galaxy Membership in MaDCoWS Clusters
Volume: 525, 2020 Compendium of Undergraduate Research in Astronomy and Space Science
Page: 1
Authors: Biggerstaff, J.; Brodwin, M.; MaDCoWS Collaboration
Abstract: The Massive and Distant Clusters of WISE Survey (MaDCoWS) is the only all sky survey designed to detect the most massive galaxy clusters in the universe at redshifts of 0.7≤ z ≤1.5. Follow-up observations with the Spitzer Space Telescope were obtained for the 2000 most strongly-detected clusters. We utilize images from the DESI Legacy Survey DR8 taken in g, r, and z bands by the Dark Energy Camera to construct a photometric catalog centered on IRAC-selected sources and combined with existing IRAC 3.6 μm and 4.5 μm data to create a five band catalog. We then determined photometric redshifts from these new catalogs and therefore established cluster membership. With this information we can further investigate the quenching mechanism acting in clusters and thus the epoch in cosmic history when passive galaxy evolution began.
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