The XMM-LSS Survey. First high redshift galaxy clusters: relaxed and collapsing systems

Abstract

We present five newly found galaxy clusters at z>0.6 from the XMM Large-Scale Structure Survey (XMM-LSS). All five objects are extended X-ray sources in the XMM images. For three of them we have sufficient spectroscopically confirmed member galaxies that an estimate of the velocity dispersion is possible: XLSSC 001 at z=0.613 and σ_V=867^{+80}_{-60} km/s, XLSSC 002 at z=0.772 and σ_V=524^{+267}_{-116} km/s and XLSSC 003 at z=0.839 and σ_V=780^{+137}_{-75} km/s. These three clusters have X-ray bolometric luminosities L_X \sim 1-3 \times 10^{44} erg/s and temperatures 2-4 keV, and consequently are less massive than previously known clusters at similar redshifts, but nevertheless they follow the low redshift scaling relations between L_X, T and σ_V, within the limits of the measurement errors. One of the clusters, XLSSC 004, is detected independently as an overdensity of galaxies of a colour R-z'=1.4 that matches the redshift of the central galaxy z=0.87, although it cannot unambiguously be confirmed by the spectroscopic observations alone. The highest redshift candidate cluster pertaining to this paper, XLSSC 005, is most likely a double cluster complex at a redshift around unity, associated with an extended X-ray source with probable substructure.

arXiv comment11 pages, 8 figures; revised version accepted in A&A. The PDF article with full resolution figures is available from http://astro.imperial.ac.uk/~ivanv/export/XMM-LSS_II.pdf

References in corpus (39)

• The Mass Function of an X-Ray Flux-Limited Sample of Galaxy Clusters
• Evolution since z = 0.5 of the Morphology-Density relation for Clusters of Galaxies
• The ROSAT Brightest Cluster Sample (BCS) - I. The compilation of the sample and the cluster log N-log S distribution
• A New Method For Galaxy Cluster Detection I: The Algorithm
• RVSAO 2.0: Digital Redshifts and Radial Velocities
• MACS: A quest for the most massive galaxy clusters in the universe
• The Evolution of X-ray Clusters of Galaxies
• The Lx-T Relation and Intracluster Gas Fractions of X-ray Clusters
• The ROSAT Deep Cluster Survey: the X-ray Luminosity Function out to z=0.8
• The ROSAT Brightest Cluster Sample (BCS) - IV. The extended sample
• Measuring ${\Omega }_m$ with the ROSAT Deep Cluster Survey
• The Palomar Distant Cluster Survey: I. The Cluster Catalog
• Measuring Cosmological Parameters from the Evolution of Cluster X-ray Temperatures
• The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample
• XMM-Newton observation of the Lockman Hole II. Spectral analysis
• The Lx-T, Lx-sigma and sigma-T relations for groups and clusters of galaxies
• The Lx-T and Lx-sigma Relationships for Galaxy Clusters Revisited
• The Bright SHARC Survey: The Cluster Catalog
• A Flux-limited Sample of Bright Clusters of Galaxies from the Southern Part of the ROSAT All-Sky Survey: the Catalog and the LogN-LogS
• The VIRMOS deep imaging survey II: CFH12K BVRI optical data for the 0226-04 deep field
• An IR-Selected Galaxy Cluster at z=1.27
• The 160 Square Degree ROSAT Survey: the Revised Catalog of 201 Clusters with Spectroscopic Redshifts
• Evolution of the cluster X-ray scaling relations since z>0.4
• Iron abundance in the ICM at high redshift
• Chandra Multi-wavelength Project (ChaMP). I. First X-ray Source Catalog
• The ROSAT-ESO Flux Limited X-ray (REFLEX) Galaxy Cluster Survey II: The Spatial Correlation Function
• The WARPS survey - II: The Log(N)-Log(S) relation and the X-ray evolution of low luminosity Clusters of Galaxies
• The Las Campanas Distant Cluster Survey - The Catalog
• A Study of Nine High-Redshift Clusters of Galaxies: II. Photometry, Spectra, and Ages of Clusters 0023+0423 and 1604+4304
• Structure Detection in Low Intensity X-Ray Images
• Chandra X-ray analysis of the massive high-redshift galaxy clusters ClJ1113.1-2615 and ClJ0152.7-1357
• Comparison of source detection procedures for XMM-Newton images
• Galaxy colours in high redshift X-ray selected clusters - I: Blue galaxy fractions in eight clusters
• The WARPS survey - IV: The X-ray luminosity-temperature relation of high redshift galaxy clusters
• Cluster Evolution in the ROSAT North Ecliptic Pole Survey
• Constraints on Ω_0 and Cluster Evolution Using the ROSAT LogN-LogS
• Abundance Constraints and Direct Redshift Measurement of the Diffuse X-ray Emission from a Distant Cluster of Galaxies
• Cosmology with Galaxy Clusters in the XMM Large-Scale Structure Survey
• Optimal Chandra/XMM-Newton Band-Passes for Detecting Low Temperature Groups and Clusters of Galaxies

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