Umetsu, K, Sereno, M, Lieu, M, Miyatake, H, Medezinski, E, Nishizawa, AJ, Giles, P, Gastaldello, F, McCarthy, IG, Kilbinger, M, Birkinshaw, M, Ettori, S, Okabe, N, Chiu, I-N, Coupon, J, Eckert, D, Fujita, Y, Higuchi, Y, Koulouridis, E, Maughan, B et al, Miyazaki, S, Oguri, M, Pacaud, F, Pierre, M, Rapetti, D and Smith, GP (2020) Weak lensing Analysis of X-Ray-selected XXL Galaxy Groups and Clusters with Subaru HSC Data. Astrophysical Journal, 890 (2). ISSN 0004-637X

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Abstract

We present a weak-lensing analysis of X-ray galaxy groups and clusters selected from the XMM-XXL survey using the first-year data from the Hyper Suprime-Cam (HSC) Subaru Strategic Program. Our joint weak-lensing and X-ray analysis focuses on 136 spectroscopically confirmed X-ray-selected systems at 0.031 < z < 1.033 detected in the 25sqdeg XXL-N region. We characterize the mass distributions of individual clusters and establish the concentration-mass (c-M) relation for the XXL sample, by accounting for selection bias and statistical effects, and marginalizing over the remaining mass calibration uncertainty. We find the mass-trend parameter of the c-M relation to be \beta = -0.07 \pm 0.28 and the normalization to be c200 = 4.8 \pm 1.0 (stat) \pm 0.8 (syst) at M200=10^{14}Msun/h and z = 0.3. We find no statistical evidence for redshift evolution. Our weak-lensing results are in excellent agreement with dark-matter-only c-M relations calibrated for recent LCDM cosmologies. The level of intrinsic scatter in c200 is constrained as \sigma(\ln[c200]) < 24% (99.7% CL), which is smaller than predicted for the full population of LCDM halos. This is likely caused in part by the X-ray selection bias in terms of the relaxation state. We determine the temperature-mass (Tx-M500) relation for a subset of 105 XXL clusters that have both measured HSC lensing masses and X-ray temperatures. The resulting Tx-M500 relation is consistent with the self-similar prediction. Our Tx-M500 relation agrees with the XXL DR1 results at group scales, but has a slightly steeper mass trend, implying a smaller mass scale in the cluster regime. The overall offset in the Tx-M500 relation is at the $1.5\sigma$ level, corresponding to a mean mass offset of (34\pm 20)%. We also provide bias-corrected, weak-lensing-calibrated M200 and M500 mass estimates of individual XXL clusters based on their measured X-ray temperatures.

Item Type:	Article
Uncontrolled Keywords:	astro-ph.CO; astro-ph.CO; astro-ph.GA
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Astrophysics Research Institute
Publisher:	American Astronomical Society; IOP Publishing
Related URLs:	http://arxiv.org/abs/1909.10524v3
Date Deposited:	14 Apr 2020 08:30
Last Modified:	04 Sep 2021 07:29
DOI or ID number:	10.3847/1538-4357/ab6bca
URI:	https://researchonline.ljmu.ac.uk/id/eprint/12710

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