TY - JOUR
T1 - CCCP and MENeaCS
T2 - (updated) weak-lensing masses for 100 galaxy clusters
AU - Herbonnet, Ricardo
AU - Sifón, Cristóbal
AU - Hoekstra, Henk
AU - Bahé, Yannick
AU - Van Der Burg, Remco F.J.
AU - Melin, Jean Baptiste
AU - Von Der Linden, Anja
AU - Sand, David
AU - Kay, Scott
AU - Barnes, David
N1 - Funding Information:
RH and AvdL are supported by the U.S. Department of Energy under award DE-SC0018053. RH, CS, and HH acknowledge support from the European Research Council FP7 grant number 279396. Research by DJS is supported by NSF grants AST-1821967, 1821987, 1813708, 1813466, and 1908972.
Publisher Copyright:
© 2020 The Author(s).
PY - 2020/10/1
Y1 - 2020/10/1
N2 - Large area surveys continue to increase the samples of galaxy clusters that can be used to constrain cosmological parameters, provided that the masses of the clusters are measured robustly. To improve the calibration of cluster masses using weak gravitational lensing we present new results for 48 clusters at 0.05 < z < 0.15, observed as part of the Multi Epoch Nearby Cluster Survey, and re-evaluate the mass estimates for 52 clusters from the Canadian Cluster Comparison Project. Updated high-fidelity photometric redshift catalogues of reference deep fields are used in combination with advances in shape measurements and state-of-the-art cluster simulations, yielding an average systematic uncertainty in the lensing signal below 5 per cent, similar to the statistical uncertainty for our cluster sample. We derive a scaling relation with Planck measurements for the full sample and find a bias in the Planck masses of 1-b = 0.84 ± 0.04 (stat) ±0.05 (syst). We find no statistically significant trend of the mass bias with redshift or cluster mass, but find that different selections could change the bias by up to 0.07. We find a gas fraction of 0.139 ± 0.014 (stat) for eight relaxed clusters in our sample, which can also be used to infer cosmological parameters.
AB - Large area surveys continue to increase the samples of galaxy clusters that can be used to constrain cosmological parameters, provided that the masses of the clusters are measured robustly. To improve the calibration of cluster masses using weak gravitational lensing we present new results for 48 clusters at 0.05 < z < 0.15, observed as part of the Multi Epoch Nearby Cluster Survey, and re-evaluate the mass estimates for 52 clusters from the Canadian Cluster Comparison Project. Updated high-fidelity photometric redshift catalogues of reference deep fields are used in combination with advances in shape measurements and state-of-the-art cluster simulations, yielding an average systematic uncertainty in the lensing signal below 5 per cent, similar to the statistical uncertainty for our cluster sample. We derive a scaling relation with Planck measurements for the full sample and find a bias in the Planck masses of 1-b = 0.84 ± 0.04 (stat) ±0.05 (syst). We find no statistically significant trend of the mass bias with redshift or cluster mass, but find that different selections could change the bias by up to 0.07. We find a gas fraction of 0.139 ± 0.014 (stat) for eight relaxed clusters in our sample, which can also be used to infer cosmological parameters.
KW - cosmology: observations
KW - galaxies: clusters: individual
KW - gravitational lensing: weak
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U2 - 10.1093/mnras/staa2303
DO - 10.1093/mnras/staa2303
M3 - Article
AN - SCOPUS:85097342631
SN - 0035-8711
VL - 497
SP - 4684
EP - 4703
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -