XXL Survey groups and clusters in the Hyper Suprime-Cam Survey. Scaling relations between X-ray properties and weak lensing mass
Date Issued
2020
Author(s)
•
Umetsu, Keiichi
•
•
Eckert, Dominique
•
•
Giles, Paul
•
Lieu, Maggie
•
Maughan, Ben
•
Okabe, Nobuhiro
•
Birkinshaw, Mark
•
Chiu, I. -Non
•
Fujita, Yutaka
•
Miyazaki, Satoshi
•
Rapetti, David
•
Koulouridis, Elias
•
Pierre, Marguerite
Abstract
Scaling relations trace the formation and evolution of galaxy clusters. We exploited multi-wavelength surveys - the XXL survey at XMM-Newton in the X-ray band, and the Hyper Suprime-Cam Subaru Strategic Program for optical weak lensing - to study an X-ray selected, complete sample of clusters and groups. The scalings of gas mass, temperature, and soft-band X-ray luminosity with the weak lensing mass show imprints of radiative cooling and active galactic nucleus feedback in groups. From the multi-variate analysis, we found some evidence for steeper than self-similar slopes for gas mass (β _{m_g|m}=1.73 ± 0.80) and luminosity (βl|m = 1.91 ± 0.94) and a nearly self-similar slope for the temperature (βt|m = 0.78 ± 0.43). Intrinsic scatters of X-ray properties appear to be positively correlated at a fixed mass (median correlation factor ρ _{X_1X_2|m}˜ 0.34) due to dynamical state and merger history of the haloes. Positive correlations with the weak lensing mass (median correlation factor ρ _{m_wlX|m}˜ 0.35) can be connected to triaxiality and orientation. Comparison of weak lensing and hydrostatic masses suggests a small role played by non-thermal pressure support (9± 17 per cent).
Volume
492
Issue
3
Start page
4528
Issn Identifier
0035-8711
Ads BibCode
2020MNRAS.492.4528S
Rights
open.access
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