Oral Presentation

HSC Weak-lensing Analysis of XXL-selected Galaxy Clusters

Author(s): Keiichi Umetsu and HSC/XXL collaboration

Presenter: Keiichi Umetsu (ASIAA)

In this talk, we will present new results from our systematic HSC weak-lensing study of X-ray galaxy groups and clusters from the XMM-XXL survey. Our joint weak-lensing and X-ray analysis will focus on 150 X-ray-selected, optically confirmed clusters/groups detected in the XXL-North region (25 square degrees), which largely overlaps with the HSC Wide-layer footprint. Our sample spans a wide range of clusters masses (10^13 < M_500 M_sun < 10^15) and X-ray luminosities (2 x 10^41 <= L^XXL_500 (erg/s)<= 2 x10^44). With the high-quality weak-lensing data obtained from HSC-SSP, we will characterize the mass distribution of the XXL clusters and establish their concentration-mass (c-M) relation. We find that the c-M relation of the XXL groups/clusters is in good agreement with those of high-mass X-ray clusters (e.g., LoCuSS and CLASH), as well as with dark-matter-only c-M relations calibrated for recent LCDM cosmologies. On the basis of our HSC weak-lensing mass measurements, we will also study scaling relations and intrinsic covariance between the X-ray properties, such as X-ray luminosity, temperature, and gas mass, and the weak-lensing mass in the CoMaLit framework (Sereno et al.).