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Title: SPT-CL J0205-5829: A z = 1.32 EVOLVED MASSIVE GALAXY CLUSTER IN THE SOUTH POLE TELESCOPE SUNYAEV-ZEL'DOVICH EFFECT SURVEY

Abstract

The galaxy cluster SPT-CL J0205-5829 currently has the highest spectroscopically confirmed redshift, z = 1.322, in the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. XMM-Newton observations measure a core-excluded temperature of T{sub X} = 8.7{sup +1.0} {sub -0.8} keV producing a mass estimate that is consistent with the Sunyaev-Zel'dovich-derived mass. The combined SZ and X-ray mass estimate of M {sub 500} = (4.8 {+-} 0.8) Multiplication-Sign 10{sup 14} h {sup -1} {sub 70} M {sub Sun} makes it the most massive known SZ-selected galaxy cluster at z > 1.2 and the second most massive at z > 1. Using optical and infrared observations, we find that the brightest galaxies in SPT-CL J0205-5829 are already well evolved by the time the universe was <5 Gyr old, with stellar population ages {approx}>3 Gyr, and low rates of star formation (<0.5 M {sub Sun} yr{sup -1}). We find that, despite the high redshift and mass, the existence of SPT-CL J0205-5829 is not surprising given a flat {Lambda}CDM cosmology with Gaussian initial perturbations. The a priori chance of finding a cluster of similar rarity (or rarer) in a survey the size of the 2500 deg{sup 2} SPT-SZ survey is 69%.

Authors:
;  [1]; ;  [2]; ; ;  [3];  [4];  [5];  [6];  [7]; ; ; ; ; ;  [8];  [9];  [10];
  1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
  2. Department of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138 (United States)
  3. Department of Physics, Ludwig-Maximilians-Universitaet, Scheinerstr. 1, D-81679 Muenchen (Germany)
  4. Department of Physics, University of Missouri, 5110 Rockhill Road, Kansas City, MO 64110 (United States)
  5. University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States)
  6. National Center for Supercomputing Applications, University of Illinois, 1205 West Clark Street, Urbana, IL 61801 (United States)
  7. MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (United States)
  8. Kavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States)
  9. NIST Quantum Devices Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305 (United States)
  10. Departamento de Astronomia y Astrosifica, Pontificia Universidad Catolica (Chile)
Publication Date:
OSTI Identifier:
22167145
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 763; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGY; GALACTIC EVOLUTION; GALAXIES; GALAXY CLUSTERS; KEV RANGE; MASS; PERTURBATION THEORY; RED SHIFT; STARS; TELESCOPES; UNIVERSE; X RADIATION

Citation Formats

Stalder, B., Ashby, M. L. N., Ruel, J., Bayliss, M., Suhada, R., Andersson, K., Bazin, G., Brodwin, M., Aird, K. A., Armstrong, R., Bautz, M., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Crawford, T. M., Crites, A. T., Cho, H. M., Clocchiatti, A., De Haan, T., E-mail: bstalder@cfa.harvard.edu, and others, and. SPT-CL J0205-5829: A z = 1.32 EVOLVED MASSIVE GALAXY CLUSTER IN THE SOUTH POLE TELESCOPE SUNYAEV-ZEL'DOVICH EFFECT SURVEY. United States: N. p., 2013. Web. doi:10.1088/0004-637X/763/2/93.
Stalder, B., Ashby, M. L. N., Ruel, J., Bayliss, M., Suhada, R., Andersson, K., Bazin, G., Brodwin, M., Aird, K. A., Armstrong, R., Bautz, M., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Crawford, T. M., Crites, A. T., Cho, H. M., Clocchiatti, A., De Haan, T., E-mail: bstalder@cfa.harvard.edu, & others, and. SPT-CL J0205-5829: A z = 1.32 EVOLVED MASSIVE GALAXY CLUSTER IN THE SOUTH POLE TELESCOPE SUNYAEV-ZEL'DOVICH EFFECT SURVEY. United States. doi:10.1088/0004-637X/763/2/93.
Stalder, B., Ashby, M. L. N., Ruel, J., Bayliss, M., Suhada, R., Andersson, K., Bazin, G., Brodwin, M., Aird, K. A., Armstrong, R., Bautz, M., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Crawford, T. M., Crites, A. T., Cho, H. M., Clocchiatti, A., De Haan, T., E-mail: bstalder@cfa.harvard.edu, and others, and. Fri . "SPT-CL J0205-5829: A z = 1.32 EVOLVED MASSIVE GALAXY CLUSTER IN THE SOUTH POLE TELESCOPE SUNYAEV-ZEL'DOVICH EFFECT SURVEY". United States. doi:10.1088/0004-637X/763/2/93.
@article{osti_22167145,
title = {SPT-CL J0205-5829: A z = 1.32 EVOLVED MASSIVE GALAXY CLUSTER IN THE SOUTH POLE TELESCOPE SUNYAEV-ZEL'DOVICH EFFECT SURVEY},
author = {Stalder, B. and Ashby, M. L. N. and Ruel, J. and Bayliss, M. and Suhada, R. and Andersson, K. and Bazin, G. and Brodwin, M. and Aird, K. A. and Armstrong, R. and Bautz, M. and Benson, B. A. and Bleem, L. E. and Carlstrom, J. E. and Chang, C. L. and Crawford, T. M. and Crites, A. T. and Cho, H. M. and Clocchiatti, A. and De Haan, T., E-mail: bstalder@cfa.harvard.edu and others, and},
abstractNote = {The galaxy cluster SPT-CL J0205-5829 currently has the highest spectroscopically confirmed redshift, z = 1.322, in the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. XMM-Newton observations measure a core-excluded temperature of T{sub X} = 8.7{sup +1.0} {sub -0.8} keV producing a mass estimate that is consistent with the Sunyaev-Zel'dovich-derived mass. The combined SZ and X-ray mass estimate of M {sub 500} = (4.8 {+-} 0.8) Multiplication-Sign 10{sup 14} h {sup -1} {sub 70} M {sub Sun} makes it the most massive known SZ-selected galaxy cluster at z > 1.2 and the second most massive at z > 1. Using optical and infrared observations, we find that the brightest galaxies in SPT-CL J0205-5829 are already well evolved by the time the universe was <5 Gyr old, with stellar population ages {approx}>3 Gyr, and low rates of star formation (<0.5 M {sub Sun} yr{sup -1}). We find that, despite the high redshift and mass, the existence of SPT-CL J0205-5829 is not surprising given a flat {Lambda}CDM cosmology with Gaussian initial perturbations. The a priori chance of finding a cluster of similar rarity (or rarer) in a survey the size of the 2500 deg{sup 2} SPT-SZ survey is 69%.},
doi = {10.1088/0004-637X/763/2/93},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 763,
place = {United States},
year = {2013},
month = {2}
}