The spectroscopically confirmed huge cosmic structure at z=0.55

Abstract

We report on the spectroscopic confirmation of a huge cosmic structure around the CL0016 cluster at z=0.55. We made wide-field imaging observations of the surrounding regions of the cluster and identified more than 30 concentrations of red galaxies near the cluster redshift. The follow-up spectroscopic observations of the most prominent part of the structure confirmed 14 systems close to the cluster redshift, roughly half of which have a positive probability of being bound to the cluster dynamically. We also made an X-ray follow-up, which detected extended X-ray emissions from 70% of the systems in the X-ray surveyed region. The observed structure is among the richest ever observed in the distant Universe. It will be an ideal site for quantifying environmental variations in the galaxy properties and effects of large-scale structure on galaxy evolution.

4 pages, 2 figures. Accepted for publication in A&A Letters

References in corpus (11)

• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• The Cosmic Evolution Survey (COSMOS) -- Overview
• The XMM-Newton wide-field survey in the COSMOS field: VI. Statistical properties of clusters of galaxies
• Inter-cluster filaments in a $\Lambda$CDM Universe
• Large-scale Filamentary Structure around the Protocluster at Redshift z=3.1
• The Complex Structure of the Cl 1604 Supercluster at z~0.9
• Panoramic Views of Cluster-Scale Assemblies Explored by Subaru Wide-Field Imaging
• A Deficit of Faint Red Galaxies in the Possible Large-Scale Structures around the RDCS J1252.9-2927 Cluster at z=1.24
• The Environmental Dependence of Properties of Galaxies around the RDCSJ0910+54 Cluster at z=1.1
• The distant galaxy cluster CL0016+16: X-ray analysis up to $R_{200}$
• Processing challenges in the XMM-Newton slew survey

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