Journal article

MEASUREMENT OF GALAXY CLUSTER INTEGRATED COMPTONIZATION AND MASS SCALING RELATIONS WITH THE SOUTH POLE TELESCOPE

BR Saliwanchik, TE Montroy, KA Aird, M Bayliss, BA Benson, LE Bleem, S Bocquet, M Brodwin, JE Carlstrom, CL Chang, HM Cho, A Clocchiatti, TM Crawford, AT Crites, T de Haan, S Desai, MA Dobbs, JP Dudley, RJ Foley, WR Forman Show all

ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2015

Abstract

We describe a method for measuring the integrated Comptonization (YSZ) of clusters of galaxies from measurements of the Sunyaev-Zel'dovich (SZ) effect in multiple frequency bands and use this method to characterize a sample of galaxy clusters detected in the South Pole Telescope (SPT) data. We use a Markov Chain Monte Carlo method to fit a β-model source profile and integrate YSZ within an angular aperture on the sky. In simulated observations of an SPT-like survey that include cosmic microwave background anisotropy, point sources, and atmospheric and instrumental noise at typical SPT-SZ survey levels, we show that we can accurately recover β-model parameters for inputted clusters. We measur..

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Funding Acknowledgements

We acknowledge the use of the Legacy Archive for Microwave Background Data Analysis ( LAMBDA). Support for LAMBDA is provided by the NASA Office of Space Science. Galaxy cluster research at Harvard is supported by NSF grant AST-1009012. Galaxy cluster research at SAO is supported in part by NSF grants AST- 1009649 and MRI- 0723073. The McGill group acknowledges funding from theNational Sciences and Engineering Research Council of Canada, Canada Research Chairs program, and the Canadian Institute for Advanced Research. The Munich group was supported by The Cluster of Excellence " Origin and Structure of the Universe," funded by the Excellence Initiative of the Federal Government of Germany, EXC project number 153. R. J. F. is supported by a Clay Fellowship, and B. A. B. is supported by aKICP Fellowship. A. P. is supported by an NSF Graduate Research Fellowship under grant No. DGE- 1144152. J. H. L. is supported by NASA through the Einstein Fellowship Program under grant No. PF2- 130094. M. M. acknowledges support provided by NASA through aHubble Fellowship grant from STScI. M. D. acknowledges support from an Alfred P. Sloan Research Fellowship, W. F. and C. J. acknowledge support from the Smithsonian Institution, and B. S. acknowledges support from the Brinson Foundation.