CCCP and MENeaCS: (updated) weak-lensing masses for 100 galaxy clusters

被引：42

作者：

Herbonnet, Ricardo ^{[1
,2
]}

Sifon, Cristobal ^{[2
,3
]}

Hoekstra, Henk ^{[2
]}

Bahe, Yannick ^{[2
]}

van der Burg, Remco F. J. ^{[4
]}

Melin, Jean-Baptiste ^{[5
]}

von der Linden, Anja ^{[1
]}

Sand, David ^{[6
]}

Kay, Scott ^{[7
]}

Barnes, David ^{[8
]}

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[2] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[3] Pontificia Univ Catolica Valparaiso, Inst Fis, Casilla 4059, Valparaiso, Chile

[4] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany

[5] Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France

[6] Steward Observ, Dept Astron, 933 North Cherry Ave,Rm N204, Tucson, AZ 85721 USA

[7] Univ Manchester, Jodrell Bank Ctr Astrophys, Dept Phys & Astron, Manchester M13 9PL, Lancs, England

[8] MIT, Dept Phys, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 497卷 / 04期

基金：

欧盟地平线“2020”; 美国国家科学基金会; 欧洲研究理事会;

关键词：

gravitational lensing: weak; galaxies: clusters: individual; cosmology: observations; LARGE-SCALE STRUCTURE; COSMOLOGICAL CONSTRAINTS; RECONSTRUCTION PROJECT; PHOTOMETRIC REDSHIFTS; SUNYAEV-ZELDOVICH; OBSERVED GROWTH; CALIBRATION; BIAS; ASTROPHYSICS; GIANTS;

D O I：

10.1093/mnras/staa2303

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：4684 / 4703

页数：20

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