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

Show full item record



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 .

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 organization: Helsinki Institute of Physics
Department of Physics
Date: 2021-03
Language: eng
Number of pages: 33
Belongs to series: Monthly Notices of the Royal Astronomical Society
ISSN: 0035-8711
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
114 Physical sciences
Peer reviewed: Yes
Usage restriction: openAccess
Self-archived version: acceptedVersion

Files in this item

Total number of downloads: Loading...

Files Size Format View
2101.02257.pdf 2.305Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record