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Title: Cluster Mass Calibration at High Redshift: HST Weak Lensing Analysis of 13 Distant Galaxy Clusters from the South Pole Telescope Sunyaev-Zel’dovich Survey

Here we present an HST/Advanced Camera for Surveys (ACS) weak gravitational lensing analysis of 13 massive high-redshift (z median = 0.88) galaxy clusters discovered in the South Pole Telescope (SPT) Sunyaev–Zel'dovich Survey. This study is part of a larger campaign that aims to robustly calibrate mass–observable scaling relations over a wide range in redshift to enable improved cosmological constraints from the SPT cluster sample. We introduce new strategies to ensure that systematics in the lensing analysis do not degrade constraints on cluster scaling relations significantly. First, we efficiently remove cluster members from the source sample by selecting very blue galaxies in V-I colour. Our estimate of the source redshift distribution is based on Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) data, where we carefully mimic the source selection criteria of the cluster fields. We apply a statistical correction for systematic photometric redshift errors as derived from Hubble Ultra Deep Field data and verified through spatial cross-correlations. We account for the impact of lensing magnification on the source redshift distribution, finding that this is particularly relevant for shallower surveys. Finally, we account for biases in the mass modelling caused by miscentring and uncertainties in the concentration–mass relation using simulations. In combination with temperature estimates from Chandra we constrain the normalization of the mass–temperature scaling relation ln (E(z)M 500c/10 14 M ) = A + 1.5ln (kT/7.2 keV) to A=1.81$$+0.24\atop{-0.14}$$(stat.)±0.09(sys.), consistent with self-similar redshift evolution when compared to lower redshift samples. Additionally, the lensing data constrain the average concentration of the clusters to c 200c=5.6$$+3.7\atop{-1.8}$$.
Authors:
 [1] ;  [2] ;  [3] ; ORCiD logo [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [12] ;  [13] ;  [14] ;  [15] ;  [16] ;  [17] ;  [18] ;  [19] ;  [3] more »;  [20] ; ORCiD logo [21] ;  [22] ;  [23] ;  [3] ;  [10] ;  [3] ;  [24] ;  [25] « less
  1. Univ. of Bonn (Germany). Argelander-Institut fur Astronomie; Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; Stanford Univ., CA (United States). Dept. of Physics
  2. Univ. of Bonn (Germany). Argelander-Institut fur Astronomie; Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics
  3. Ludwig-Maximilians Univ., Munchen (Germany). Faculty of Physics; Excellence Cluster Universe, Garching (Germany)
  4. Leiden Univ. (Netherlands). Leiden Observatory
  5. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States); Ludwig-Maximilians Univ., Munchen (Germany). Faculty of Physics; Excellence Cluster Universe, Garching (Germany)
  6. Univ. of Florida, Gainesville, FL (United States). Dept. of Astronomy
  7. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; Stanford Univ., CA (United States). Dept. of Physics; Univ. of Copenhagen (Denmark). The Niels Bohr Inst., Dark Cosmology Centre; Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
  8. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  9. Univ. of Bonn (Germany). Argelander-Institut fur Astronomie; Univ. of Washington, Seattle, WA (United States). Dept. of Astronomy
  10. Univ. of Bonn (Germany). Argelander-Institut fur Astronomie
  11. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; Stanford Univ., CA (United States). Dept. of Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States)
  12. Harvard Univ., Cambridge, MA (United States). Dept. of Physics; Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Colby College, Waterville, Maine (United States). Dept. of Physics & Astronomy
  13. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, IL (United States). Dept. of Astronomy and Astrophysics; Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics
  14. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Univ. of Chicago, IL (United States). Dept. of Physics; Argonne National Lab. (ANL), Argonne, IL (United States)
  15. Ludwig-Maximilians Univ., Munchen (Germany). Faculty of Physics; Excellence Cluster Universe, Garching (Germany); Academia Sinica, Taipei (Taiwan). Inst. of Astronomy and Astrophysics (ASIAA)
  16. Ludwig-Maximilians Univ., Munchen (Germany). Faculty of Physics; Excellence Cluster Universe, Garching (Germany);; IIT Hyderabad, Kandi (India). Dept. of Physics
  17. Univ. of California, Santa Cruz, CA (United States). Dept. of Astronomy and Astrophysics
  18. McGill Univ., Montreal, QC (Canada). Dept of Physics; Univ. of California, Berkeley, CA (United States). Dept. of Physics
  19. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics; Univ. of Chicago, IL (United States). Dept. of Astronomy and Astrophysics
  20. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; Stanford Univ., CA (United States). Dept. of Physics
  21. Durham Univ. (United Kingdom). Inst. for Computational Cosmology
  22. Ludwig-Maximilians Univ., Munchen (Germany). Faculty of Physics; Excellence Cluster Universe, Garching (Germany); Max Planck Inst. for Extraterrestrial Physics, Garching (Germany)
  23. Univ. of Melbourne (Australia). School of Physics
  24. Harvard Univ., Cambridge, MA (United States). Dept. of Physics; Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  25. Cerro Tololo Inter-American Observatory, La Serena (Chile)
Publication Date:
Grant/Contract Number:
AC02-76SF00515; AC02-06CH11357; AC02-07CH11359; NAS 5-26555; AST-0444059-001; NSF PHY-1125897; 279396
Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 474; Journal Issue: 2; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE; National Aeronautic and Space Administration (NASA); National Science Foundation (NSF); German Research Foundation (DFG); Australian Research Council (ARC)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; gravitational lensing: weak; cosmology: observations; galaxies: clusters: general
OSTI Identifier:
1426165