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Title: Dark Energy Survey Year 1 results: weak lensing mass calibration of redMaPPer galaxy clusters

Journal Article · · Monthly Notices of the Royal Astronomical Society

We constrain the mass-richness scaling relation of redMaPPer galaxy clusters identified in the Dark Energy Survey Year 1 data using weak gravitational lensing. We split clusters into 4 x 3 bins of richness lambda and redshift z for lambda >= 20 and 0.2 <= z <= 0.65 and measure the mean masses of these bins using their stacked weak lensing signal. By modelling the scaling relation as M-200m|lambda, M-0(lambda/40)(F)((1 + /1.35)(G), we constrain the normalization of the scaling relation at the 5.0 per cent level, finding M-0 = [3.081 +/- 0.075(stat) +/- 0.133(sys)] center dot 10(14) M-aS (TM) at lambda = 40 and = 0.35. The recovered richness scaling index is F = 1.356 +/- 0.051 (stat) +/- 0.008 (sys) and the redshift scaling index G = -0.30 +/- 0.30 (stat) +/- 0.06 (sys). These are the tightest measurements of the normalization and richness scaling index made to date from a weak lensing experiment. We use a semi-analytic covariance matrix to characterize the statistical errors in the recovered weak lensing profiles. Our analysis accounts for the following sources of systematic error: shear and photometric redshift errors, cluster miscentring, cluster member dilution of the source sample, systematic uncertainties in the modelling of the halo-mass correlation function, halo triaxiality, and projection effects. We discuss prospects for reducing our systematic error budget, which dominates the uncertainty on M-0. Our result is in excellent agreement with, but has significantly smaller uncertainties than, previous measurements in the literature, and augurs well for the power of the DES cluster survey as a tool for precision cosmology and upcoming galaxy surveys such as LSST, Euclid, and WFIRST

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science - Office of High Energy Physics
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1567767
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 482, Issue 1
Country of Publication:
United States
Language:
English

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A Precise Cluster Mass Profile Averaged from the Highest-Quality Lensing Data text January 2011
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Cited By (32)

Core Cosmology Library: Precision Cosmological Predictions for LSST journal May 2019
Covariance matrices for galaxy cluster weak lensing: from virial regime to uncorrelated large-scale structure journal September 2019
Dark Energy Survey Year 1 results: validation of weak lensing cluster member contamination estimates from P(z) decomposition journal August 2019
Mass calibration of the CODEX cluster sample using SPIDERS spectroscopy – I. The richness–mass relation journal March 2019
AMICO galaxy clusters in KiDS-DR3: weak lensing mass calibration journal January 2019
The mass–richness relation of optically selected clusters from weak gravitational lensing and abundance with Subaru HSC first-year data journal September 2019
Weak lensing analysis of codex clusters using dark energy camera legacy survey: mass–richness relation journal November 2019
The Aemulus Project. II. Emulating the Halo Mass Function journal February 2019
Constraining the properties of gaseous halos via cross-correlations of upcoming galaxy surveys and thermal Sunyaev-Zel’dovich maps journal February 2020
On the relative bias of void tracers in the Dark Energy Survey journal May 2019
Mass Calibration of Optically Selected DES Clusters Using a Measurement of CMB-cluster Lensing with SPTpol Data journal February 2019
Mass variance from archival X-ray properties of Dark Energy Survey Year-1 galaxy clusters journal September 2019
A Robust and Efficient Deep Learning Method for Dynamical Mass Measurements of Galaxy Clusters journal December 2019
Cluster Cosmology Constraints from the 2500 deg 2 SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope journal June 2019
Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues journal May 2019
Dark Energy Survey Year 1 Results: Detection of Intracluster Light at Redshift ∼ 0.25 journal April 2019
Dark Energy Survey Year 1 results: the effect of intracluster light on photometric redshifts for weak gravitational lensing journal July 2019
Ellipticity of brightest cluster galaxies as tracer of halo orientation and weak-lensing mass bias journal November 2019
Methods for cluster cosmology and application to the SDSS in preparation for DES Year 1 release journal July 2019
Measurement of the splashback feature around SZ-selected Galaxy clusters with DES, SPT, and ACT journal May 2019
Dark Energy Survey year 1 results: the relationship between mass and light around cosmic voids journal October 2019
Cosmological lensing ratios with DES Y1, SPT, and Planck journal May 2019
Chandra Follow-up of the SDSS DR8 Redmapper Catalog Using the MATCha Pipeline journal September 2019
On the relative bias of void tracers in the Dark Energy Survey text January 2018
Mass Calibration of Optically Selected DES clusters using a Measurement of CMB-Cluster Lensing with SPTpol Data text January 2018
Cluster Cosmology Constraints from the 2500 deg$^2$ SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope text January 2018
Dark Energy Survey Year 1 results: Detection of Intra-cluster Light at Redshift $\sim$ 0.25 text January 2018
Dark Energy Survey Year 1 results: Validation of weak lensing cluster member contamination estimates from P(z) decomposition text January 2018
The mass-richness relation of optically-selected clusters from weak gravitational lensing and abundance with Subaru HSC first-year data text January 2019
Covariance matrices for galaxy cluster weak lensing: from virial regime to uncorrelated large-scale structure text January 2019
Dark Energy Survey Year 1 results: The relationship between mass and light around cosmic voids text January 2019
Ellipticity of Brightest Cluster Galaxies as tracer of halo orientation and weak-lensing mass bias text January 2019

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