Journal article
THE EVOLUTION OF THE INTRACLUSTER MEDIUM METALLICITY IN SUNYAEV ZEL'DOVICH- SELECTED GALAXY CLUSTERS AT 0 > z > 1.5
M McDonald, E Bulbul, T de Haan, ED Miller, BA Benson, LE Bleem, M Brodwin, JE Carlstrom, I Chiu, WR Forman, J Hlavacek-Larrondo, GP Garmire, N Gupta, JJ Mohr, CL Reichardt, A Saro, B Stalder, AA Stark, JD Vieira
ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2016
Abstract
We present the results of an X-ray spectral analysis of 153 galaxy clusters observed with the Chandra, XMM-Newton, and Suzaku space telescopes. These clusters, which span 0 < z < 1.5, were drawn from a larger, mass-selected sample of galaxy clusters discovered in the 2500 square degree South Pole Telescope Sunyaev Zel'dovich (SPT-SZ) survey. With a total combined exposure time of 9.1 Ms, these data yield the strongest constraints to date on the evolution of the metal content of the intracluster medium (ICM). We find no evidence for strong evolution in the global (r 1) enrichment. We find, in agreement with previous works, a significantly higher mean value for the metallicity in the centers ..
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Awarded by NASA
Awarded by NASA through a Hubble Fellowship grant - Space Telescope Science Institute
Awarded by National Science Foundation
Awarded by NSF Physics Frontier Center grant
Awarded by NASA through Chandra Award
Awarded by U.S. Department of Energy
Awarded by Australian Research Council?s Discovery Projects scheme
Awarded by Office of Polar Programs (OPP)
Funding Acknowledgements
Much of this work was enabled by generous GTO contributions from Steve Murray, and was in progress at the time of his untimely death in 2015. He was a valued member of the Center for Astrophysics and a strong supporter of SPT science-he will be greatly missed by all of us. MM acknowledges support by NASA through contracts GO4-15122A and GO5-16141X (Chandra), and support by NASA through a Hubble Fellowship grant HST-HF51308.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. EB acknowledges support by NASA through contract NNX123AE77G. The South Pole Telescope program is supported by the National Science Foundation through grants ANT-0638937 and PLR-1248097. This work was partially completed at Fermilab, operated by Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the United States Department of Energy. Partial support is also provided by the NSF Physics Frontier Center grant PHY-0114422 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation, and the Gordon and Betty Moore Foundation. Support for X-ray analysis was provided by NASA through Chandra Award Numbers 12800071, 12800088, and 13800883 issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA. Argonne National Laboratory's work was supported under the U.S. Department of Energy contract DE-AC02-06CH11357 C. R. acknowledges support from the Australian Research Council?s Discovery Projects scheme (DP150103208).