CODEX weak lensing mass catalogue and implications on the mass-richness relation

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Kiiveri , K , Gruen , D , Finoguenov , A , Erben , T , van Waerbeke , L , Rykoff , E , Miller , L , Hagstotz , S , Dupke , R , Henry , J P , Kneib , J-P , Gozaliasl , G , Kirkpatrick , C C , Cibirka , N , Clerc , N , Costanzi , M , Cypriano , E S , Rozo , E , Shan , H , Spinelli , P , Valiviita , J & Weller , J 2021 , ' CODEX weak lensing mass catalogue and implications on the mass-richness relation ' , Monthly Notices of the Royal Astronomical Society , vol. 502 , no. 1 , pp. 1494-1526 . https://doi.org/10.1093/mnras/staa3936

Title: CODEX weak lensing mass catalogue and implications on the mass-richness relation
Author: Kiiveri, K.; Gruen, D.; Finoguenov, A.; Erben, T.; van Waerbeke, L.; Rykoff, E.; Miller, L.; Hagstotz, S.; Dupke, R.; Henry, J. Patrick; Kneib, J-P; Gozaliasl, G.; Kirkpatrick, C. C.; Cibirka, N.; Clerc, N.; Costanzi, M.; Cypriano, E. S.; Rozo, E.; Shan, H.; Spinelli, P.; Valiviita, J.; Weller, J.
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Helsinki Institute of Physics
Date: 2021-03
Language: eng
Number of pages: 33
Belongs to series: Monthly Notices of the Royal Astronomical Society
ISSN: 0035-8711
URI: http://hdl.handle.net/10138/336506
Abstract: The COnstrain Dark Energy with X-ray clusters (CODEX) sample contains the largest flux limited sample of X-ray clusters at 0.35 <z <0.65. It was selected from ROSAT data in the 10 000 square degrees of overlap with BOSS, mapping a total number of 2770 high-z galaxy clusters. We present here the full results of the CFHT CODEX programme on cluster mass measurement, including a reanalysis of CFHTLS Wide data, with 25 individual lensing-constrained cluster masses. We employ LENSFIT shape measurement and perform a conservative colour-space selection and weighting of background galaxies. Using the combination of shape noise and an analytic covariance for intrinsic variations of cluster profiles at fixed mass due to large-scale structure, miscentring, and variations in concentration and ellipticity, we determine the likelihood of the observed shear signal as a function of true mass for each cluster. We combine 25 individual cluster mass likelihoods in a Bayesian hierarchical scheme with the inclusion of optical and X-ray selection functions to derive constraints on the slope alpha, normalization beta, and scatter sigma(ln lambda vertical bar mu) of our richness-mass scaling relation model in log-space: <In lambda vertical bar mu > = alpha mu + beta, with mu = ln (M-200c/M-piv), and M-piv = 10(14.81)M(circle dot). We find a slope alpha = 0.49(-0.15)(+0.20) , normalization exp(beta) = 84.0(-14.8)(+9.2) , and sigma(ln lambda vertical bar mu) = 0.17(-0.09)(+0.13) using CFHT richness estimates. In comparison to other weak lensing richness-mass relations, we find the normalization of the richness statistically agreeing with the normalization of other scaling relations from a broad redshift range (0.0 <z <0.65) and with different cluster selection (X-ray, Sunyaev-Zeldovich, and optical).
Subject: gravitational lensing: weak
galaxies: clusters: general
cosmology: observations
LARGE-SCALE STRUCTURE
GALAXY CLUSTERS
COSMOLOGICAL CONSTRAINTS
TEMPERATURE RELATION
MAXBCG
PROBE
REDUCTION
PROFILE
LOCUSS
GIANTS
114 Physical sciences
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