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Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z=1.3

Journal Article · · Monthly Notices of the Royal Astronomical Society
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The galaxy phase-space distribution in galaxy clusters provides insights into the formation and evolution of cluster galaxies, and it can also be used to measure cluster mass profiles. We present a dynamical study based on similar to 3000 passive, non-emission-line cluster galaxies drawn from 110 galaxy clusters. The galaxy clusters were selected using the Sunyaev-Zel'dovich effect (SZE) in the 2500 deg(2) South Pole Telescope (SPT)-SZ survey and cover the redshift range 0.2 < z < 1.3. We model the clusters using the Jeans equation, while adopting NFW mass profiles and a broad range of velocity dispersion anisotropy profiles. The data prefer velocity dispersion anisotropy profiles that are approximately isotropic near the centre and increasingly radial toward the cluster virial radius, and this is true for all redshifts and masses we study. The pseudo-phase-space density profile of the passive galaxies is consistent with expectations for dark matter particles and subhaloes from cosmological N-body simulations. The dynamical mass constraints are in good agreement with external mass estimates of the SPT cluster sample from either weak lensing, velocity dispersions, or X-ray Y-X measurements. However, the dynamical masses are lower (at the 2.2 sigma level) when compared to the mass calibration favoured when fitting the SPT cluster data to a I > cold dark matter model with external cosmological priors, including cosmic microwave background anisotropy data from Planck. The discrepancy grows with redshift, where in the highest redshift bin the ratio of dynamical to SPT + Planck masses is eta = 0.63(-0.08)(+0.13 +/-) 0.06 (statistical and systematic), corresponding to a 2.6 sigma discrepancy

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science - Office of High Energy Physics; National Science Foundation (NSF)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1572462
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 482, Issue 1
Country of Publication:
United States
Language:
English

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The Phase-Space Density Profiles of Cold Dark Matter Halos text January 2001
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The ESO Nearby Abell Cluster Survey. XIII. The orbits of the different types of galaxies in rich clusters text January 2004
Semi-analytical dark matter halos and the Jeans equation text January 2005
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Structural and dynamical modeling of WINGS clusters: II. The orbital anisotropies of elliptical, spiral, and lenticular galaxies journal November 2019
Dependency of halo concentration on mass, redshift and fossilness in Magneticum hydrodynamic simulations journal April 2019
X-Ray Properties of SPT-selected Galaxy Clusters at 0.2 < z < 1.5 Observed with XMM-Newton journal January 2019
Mass calibration of the CODEX cluster sample using SPIDERS spectroscopy – I. The richness–mass relation journal March 2019

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Galaxy kinematics and mass calibration in massive SZE-selected galaxy clusters to z  = 1.3
Journal Article · 2018 · Monthly Notices of the Royal Astronomical Society · OSTI ID:1479839
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cosmology: observations
galaxies: clusters: general
galaxies: evolution
galaxies: kinematics and dynamics
galaxies: statistics
large-scale structure of Universe