Sunyaev-Zel'dovich Cluster Profiles Measured with the South Pole Telescope Export

@article{citeulike:6109167, abstract = {We present Sunyaev-Zel'dovich measurements of 15 massive X-ray selected galaxy clusters obtained with the South Pole Telescope. The Sunyaev-Zel'dovich (SZ) cluster signals are measured at 150 GHz, and concurrent 220 GHz data are used to reduce astrophysical contamination. Radial profiles are computed using a technique that takes into account the effects of the beams and filtering. In several clusters, significant SZ decrements are detected out to a substantial fraction of the virial radius. The profiles are fit to the beta model and to a generalized NFW pressure profile, and are scaled and stacked to probe their average behavior. We find model parameters that are consistent with previous studies: beta=0.86 and r\_core/r\_500 = 0.20 for the beta model, and (alpha, beta, gamma, c\_500)=(1.0,5.5,0.5,1.0) for the generalized NFW model. Both models fit the SPT data comparably well, and both are consistent with the average SZ profile out to the virial radius. The integrated Compton-y parameter Y\_SZ is computed for each cluster using both model-dependent and model-independent techniques, and the results are compared to X-ray estimates of cluster parameters. We find that Y\_SZ scales with Y\_X and gas mass with low scatter. Since these observables have been found to scale with total mass, our results point to a tight mass-observable relation for the SPT cluster survey.}, archivePrefix = {arXiv}, author = {Plagge, T. and Benson, B. A. and Ade, P. A. R. and Aird, K. A. and Bleem, L. E. and Carlstrom, J. E. and Chang, C. L. and Cho, H. M. and Crawford, T. M. and Crites, A. T. and de Haan, T. and Dobbs, M. A. and George, E. M. and Hall, N. R. and Halverson, N. W. and Holder, G. P. and Holzapfel, W. L. and Hrubes, J. D. and Joy, M. and Keisler, R. and Knox, L. and Lee, A. T. and Leitch, E. M. and Lueker, M. and Marrone, D. and McMahon, J. J. and Mehl, J. and Meyer, S. S. and Mohr, J. J. and Montroy, T. E. and Padin, S. and Pryke, C. and Reichardt, C. L. and Ruhl, J. E. and Schaffer, K. K. and Shaw, L. and Shirokoff, E. and Spieler, H. G. and Stalder, B. and Staniszewski, Z. and Stark, A. A. and Vanderlinde, K. and Vieira, J. D. and Williamson, R. and Zahn, O.}, citeulike-article-id = {6109167}, citeulike-linkout-0 = {http://arxiv.org/abs/0911.2444}, citeulike-linkout-1 = {http://arxiv.org/pdf/0911.2444}, day = {13}, eprint = {0911.2444}, keywords = {profiles, spt, sze}, month = {Nov}, posted-at = {2009-11-13 11:59:38}, priority = {2}, title = {Sunyaev-Zel'dovich Cluster Profiles Measured with the South Pole Telescope}, url = {http://arxiv.org/abs/0911.2444}, year = {2009} }

TY - JOUR ID - citeulike:6109167 L3 - citeulike-article-id:6109167 N2 - We present Sunyaev-Zel'dovich measurements of 15 massive X-ray selected galaxy clusters obtained with the South Pole Telescope. The Sunyaev-Zel'dovich (SZ) cluster signals are measured at 150 GHz, and concurrent 220 GHz data are used to reduce astrophysical contamination. Radial profiles are computed using a technique that takes into account the effects of the beams and filtering. In several clusters, significant SZ decrements are detected out to a substantial fraction of the virial radius. The profiles are fit to the beta model and to a generalized NFW pressure profile, and are scaled and stacked to probe their average behavior. We find model parameters that are consistent with previous studies: beta=0.86 and r_core/r_500 = 0.20 for the beta model, and (alpha, beta, gamma, c_500)=(1.0,5.5,0.5,1.0) for the generalized NFW model. Both models fit the SPT data comparably well, and both are consistent with the average SZ profile out to the virial radius. The integrated Compton-y parameter Y_SZ is computed for each cluster using both model-dependent and model-independent techniques, and the results are compared to X-ray estimates of cluster parameters. We find that Y_SZ scales with Y_X and gas mass with low scatter. Since these observables have been found to scale with total mass, our results point to a tight mass-observable relation for the SPT cluster survey. TI - Sunyaev-Zel'dovich Cluster Profiles Measured with the South Pole Telescope KW - profiles KW - spt KW - sze AU - Plagge, T AU - Benson, BA AU - Ade, PAR AU - Aird, KA AU - Bleem, LE AU - Carlstrom, JE AU - Chang, CL AU - Cho, HM AU - Crawford, TM AU - Crites, AT AU - de Haan, T AU - Dobbs, MA AU - George, EM AU - Hall, NR AU - Halverson, NW AU - Holder, GP AU - Holzapfel, WL AU - Hrubes, JD AU - Joy, M AU - Keisler, R AU - Knox, L AU - Lee, AT AU - Leitch, EM AU - Lueker, M AU - Marrone, D AU - McMahon, JJ AU - Mehl, J AU - Meyer, SS AU - Mohr, JJ AU - Montroy, TE AU - Padin, S AU - Pryke, C AU - Reichardt, CL AU - Ruhl, JE AU - Schaffer, KK AU - Shaw, L AU - Shirokoff, E AU - Spieler, HG AU - Stalder, B AU - Staniszewski, Z AU - Stark, AA AU - Vanderlinde, K AU - Vieira, JD AU - Williamson, R AU - Zahn, O PY - 2009/Nov/13/ UR - http://arxiv.org/abs/0911.2444 ER -