Journal article

A Detailed Study of the Most Relaxed SPT-selected Galaxy Clusters: Properties of the Cool Core and Central Galaxy

M McDonald, SW Allen, J Hlavacek-Larrondo, AB Mantz, M Bayliss, BA Benson, M Brodwin, E Bulbul, REA Canning, I Chiu, WR Forman, GP Garmire, N Gupta, G Khullar, JJ Mohr, CL Reichardt, T Schrabback

ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2019

Abstract

We present a multi-wavelength analysis of the four most relaxed clusters in the South Pole Telescope 2500 deg2 survey, which lie at 0.55 < z < 0.75. This study, which utilizes new, deep data from the Chandra X-ray Observatory and Hubble Space Telescope, along with ground-based spectroscopy from Gemini and Magellan, improves significantly on previous studies in both depth and angular resolution, allowing us to directly compare to clusters at z ∼ 0. We find that the temperature, density, and entropy profiles of the intracluster medium (ICM) are very similar among the four clusters, and share similar shapes to those of clusters at z ∼ 0. Specifically, we find no evidence for deviations from sel..

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Grants

Awarded by NASA through Chandra Award by the Chandra X-ray Observatory Center


Awarded by National Aeronautics & Space Administration


Awarded by NASA through the Space Telescope Science Institute


Awarded by NASA


Awarded by National Science Foundation


Awarded by NSF Physics Frontier Center


Awarded by Gordon and Betty Moore Foundation


Awarded by U.S. Department of Energy


Awarded by Transregio program "The Dark Universe"


Awarded by German Federal Ministry of Economics and Technology (BMWi) through DLR


Awarded by Australian Research Council's Discovery Projects funding scheme


Awarded by Fermi Research Alliance, LLC


Funding Acknowledgements

Support for this work was provided by NASA through Chandra Award Numbers GO6-17112A and GO6-17112B issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics & Space Administration under contract NAS8-03060. Additional support was provided by NASA through grants from the Space Telescope Science Institute (HST-GO-13578, HST-GO-14352), which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. The South Pole Telescope is supported by the National Science Foundation through grant PLR-1248097. Partial support is also provided by the NSF Physics Frontier Center grant PHY-1125897 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation and the Gordon and Betty Moore Foundation grant GBMF 947. S.W.A. and A.B.M. acknowledge additional support from the U.S. Department of Energy under contract number DE-AC02-76SF00515. J.H.L. is supported by NSERC through the discovery grant and Canada Research Chair programs. W.F. acknowledges support from NASA contract NAS-08060 and the Smithsonian Institution. The Munich group acknowledges the support by the DFG Cluster of Excellence "Origin and Structure of the Universe", the Ludwig-Maximilians-Universitat (LMU-Munich), and the Transregio program TR33 "The Dark Universe." T.S. acknowledges support from the German Federal Ministry of Economics and Technology (BMWi) provided through DLR under projects 50 OR 1210, 50 OR 1407, and 50 OR 1610. The Melbourne group acknowledges support from the Australian Research Council's Discovery Projects funding scheme (DP150103208). B.B. is supported by the Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the U.S. Department of Energy.