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Title: CODEX weak lensing: concentration of galaxy clusters at z ~ 0.5

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [4];  [11];  [12];  [13];  [14];  [15]
  1. Univ. of Sao Paulo (Brazil). Inst. of Astronomy, Geophysics and Atmospheric Sciences; Ludwig Maximilian Univ., Munich (Germany)
  2. Univ. of Sao Paulo (Brazil). Inst. of Astronomy, Geophysics and Atmospheric Sciences
  3. Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany); National Observatory, Rio de Janeiro (Brazil); Ludwig Maximilian Univ., Munich (Germany)
  4. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics & Cosmology; SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Argelander-Inst. fur Astronomie, Bonn (Germany)
  6. Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Physics and Astronomy
  7. Univ. of Oxford (United Kingdom). Dept. of Physics
  8. Univ. of Helsinki (Finland). Dept. of Physics; Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany)
  9. Univ. of Helsinki (Finland). Dept. of Physics; Univ. of Helsinki (Finland). Helsinki Inst. of Physics
  10. Inst. for Astronomy, Honolulu, HI (United States)
  11. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics
  12. National Observatory, Rio de Janeiro (Brazil); Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Astronomy; Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy; Eureka Scienti c Inc., Oakland, CA (United States)
  13. Ecole Polytechnique Federale Lausanne (Switzlerland). Lab. d'Astrophysique, Observatoire de Sauverny; Aix-Marseille Univ., and CNRS/IN2P3, Marseille (France). Lab. d'Astrophysique de Marseille
  14. Ecole Polytechnique Federale Lausanne (Switzlerland). Lab. d'Astrophysique, Observatoire de Sauverny
  15. Museum of Astronomy and Related Sciences (MAST), Rio de Janeiro (Brazil)

Here, we present a stacked weak-lensing analysis of 27 richness selected galaxy clusters at 0.40 ≤ z ≤ 0.62 in the COnstrain Dark Energy with X-ray galaxy clusters (CODEX) survey. The fields were observed in five bands with the Canada–France–Hawaii Telescope (CFHT). We measure the stacked surface mass density profile with a 14σ significance in the radial range 0.1 < RMpch-1 < 2.5. The profile is well described by the halo model, with the main halo term following a Navarro–Frenk–White profile (NFW) profile and including the off-centring effect. We select the background sample using a conservative colour–magnitude method to reduce the potential systematic errors and contamination by cluster member galaxies. We perform a Bayesian analysis for the stacked profile and constrain the best-fitting NFW parameters M200c=6.6$$+1.0\atop{-0.8}$$×1014h-1 M⊙ and c200c=3.7$$+0.7\atop{-0.6}$$. The off-centring effect was modelled based on previous observational results found for redMaPPer Sloan Digital Sky Survey clusters. Our constraints on M200c and c200c allow us to investigate the consistency with numerical predictions and select a concentration–mass relation to describe the high richness CODEX sample. Comparing our best-fitting values for M200c and c200c with other observational surveys at different redshifts, we find no evidence for evolution in the concentration–mass relation, though it could be mitigated by particular selection functions. Similar to previous studies investigating the X-ray luminosity–mass relation, our data suggest a lower evolution than expected from self-similarity.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE; National Aeronautic and Space Administration (NASA)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1360791
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 1 Vol. 468; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (14)

Cluster–galaxy weak lensing journal November 2020
The Galaxy Cluster Mass Scale and Its Impact on Cosmological Constraints from the Cluster Population journal February 2019
Structural and dynamical modeling of WINGS clusters: II. The orbital anisotropies of elliptical, spiral, and lenticular galaxies journal November 2019
Constraining self-interacting dark matter with scaling laws of observed halo surface densities journal April 2018
How proper are Bayesian models in the astronomical literature? journal August 2018
Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters journal December 2018
Dark Energy Survey Year 1 Results: redshift distributions of the weak-lensing source galaxies journal April 2018
Exploring relations between BCG and cluster properties in the SPectroscopic IDentification of eROSITA Sources survey from 0.05 < 0.3 journal June 2018
Weak lensing analysis of codex clusters using dark energy camera legacy survey: mass–richness relation journal November 2019
Halo concentration, galaxy red fraction, and gas properties of optically defined merging clusters† journal July 2019
Halo Profiles and the Concentration–Mass Relation for a ΛCDM Universe journal May 2018
Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies text January 2017
Halo Concentration, Galaxy Red Fraction, and Gas Properties of Optically-defined Merging Clusters text January 2018
The galaxy cluster mass scale and its impact on cosmological constraints from the cluster population text January 2019

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