The X-ray-Optical Relations for Nine Clusters at z = 0.7-1.1

Abstract

We use Chandra observations of nine optically and X-ray selected clusters in five different structures at z ~ 0.7-1.1 from the Observations of Redshift Evolution in Large-Scale Environments (ORELSE) survey to study diffuse X-ray emission from galaxy clusters. X-ray gas temperatures and bolometric rest-frame luminosities are measured for each cluster in the sample. We present new redshift measurements, derived from dataobtained using the Deep Imaging Multi-Object Spectrograph on the Keck 10-m telescope, for two clusters in the RX J0910 supercluster at z ~ 1.1, from which velocity dispersions are measured. Dispersions for all clusters are combined with X-ray luminosities and gas temperatures to evaluate how the cluster properties compare to low-redshift scaling relations. We also measure the degree of substructure in each cluster by examining the velocity histograms, performing Dressler-Shectman tests, and computing the offsets between the X-ray emission center and optically-derived centroids. We find that only two clusters show clear indications of being unrelaxed, based on their scaling relations and other dynamical state diagnostics. Using our sample, we evaluate the redshift evolution of the L_x-T relation and investigate the implications of our results for precision cosmology surveys.

19 pages, 10 figures, Accepted for publication in ApJ

References in corpus (14)

• Astrophysics Source Code Library
• The DEEP2 Galaxy Redshift Survey: Design, Observations, Data Reduction, and Redshifts
• Observational constraints on the redshift evolution of X-ray scaling relations of galaxy clusters out to z ~ 1.5
• The Observations of Redshift Evolution in Large Scale Environments (ORELSE) Survey : I. The Survey Design and First Results on Cl 0023+0423 at z = 0.84 and RX J1821.6+6827 at z = 0.82
• The Complex Structure of the Cl 1604 Supercluster at z~0.9
• Chandra X-ray Observations of the 0.6 < z < 1.1 Red-Sequence Cluster Survey Sample
• Serendipitous Discovery of an Overdensity of Lyman-Alpha Emitters at z~4.8 in the Cl1604 Supercluster Field
• Chandra Observations of the Cl1604 Supercluster at z=0.9: Evidence for an Overdensity of Active Galactic Nuclei
• The Environmental Dependence of Properties of Galaxies around the RDCSJ0910+54 Cluster at z=1.1
• X-ray Galaxy Clusters in NoSOCS: Substructure and the Correlation of Optical and X-ray Properties
• High redshift X-ray galaxy clusters. II. The L_X-T relationship revisited
• A New Method to Quantify X-ray Substructures in Clusters of Galaxies
• Properties of Galaxies Hosting X-ray Selected Active Galactic Nuclei in the Cl1604 Supercluster at z=0.9
• Galaxy Clusters in the IRAC Dark Field I: Growth of the red sequence

Cited by in corpus (15)

• The VIMOS Ultra Deep Survey: Emerging from the Dark, a Massive Proto-Cluster at z~4.57
• VIMOS Ultra-Deep Survey (VUDS): Witnessing the Assembly of a Massive Cluster at z~3.3
• Persistence of the Color-Density Relation and Efficient Environmental Quenching to $z\sim 1.4$
• Chronos and Kairos: Mosfire Observations of Post-Starburst Galaxies in z~1 Clusters and Groups
• Star Formation Quenching in High-redshift Large-scale Structure: Post-starburst Galaxies in the Cl1604 Supercluster at $z\sim 0.9$
• The Violent Youth of Bright and Massive Cluster Galaxies and their Maturation over 7 Billion Years
• Establishing a New Technique for Discovering Large-Scale Structure Using the ORELSE Survey
• The Properties of Radio Galaxies and the Effect of Environment in Large Scale Structures at $z\sim 1$
• The Chandra Deep Group Survey -- cool core evolution in groups and clusters of galaxies
• Evaluating Tests of Virialization and Substructure Using Galaxy Clusters in the ORELSE Survey
• Kinematic analysis of a sample of X-ray luminous distant galaxy clusters. The $L_X$ - ${\sigma }_v$ relation in the $z>0.6$ universe
• X-Ray Emitting Active Galactic Nuclei from z = 0.6-1.3 in the Intermediate and High-Density Environments of the ORELSE Survey
• Suppressed Star Formation by a Merging Cluster System
• Star Formation In The Cluster Merger DLSCL J0916.2+2953
• The distribution of lenticular galaxies in the phase space of present-day galaxy cluster regions