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The Luminosity-Temperature Relation at z = 0.4 for Clusters of Galaxies
We have obtained the first large sample of accurate temperatures for clusters at z > 0.14 from ASCA. We compare the luminosity-temperature (L-T) distribution for these clusters with the low-redshift
Observational Tests of the Mass-Temperature Relation for Galaxy Clusters
We examine the relationship between the mass and X-ray gas temperature of galaxy clusters using data drawn from the literature. Simple theoretical arguments suggest that the mass of a cluster is
The WARPS Survey. II. The log N-log S Relation and the X-Ray Evolution of Low-Luminosity Clusters of Galaxies
The strong negative evolution observed in previous X-ray-selected surveys of clusters of galaxies is evidence in favor of hierarchical models of the growth of structure in the universe. A large
The Second Most Distant Cluster of Galaxies in the Extended Medium Sensitivity Survey
We report on our ASCA, Keck, and ROSAT observations of MS 1137.5+6625, the second most distant cluster of galaxies in the Einstein Extended Medium Sensitivity Survey (EMSS), at redshift 0.78. We now
The Chandra Deep Protocluster Survey: Lyα Blobs are powered by heating, not cooling
We present the results of a 400 ks Chandra survey of 29 extended Lyα emitting nebulae (Lyα Blobs, LABs) in the z = 3.09 protocluster in the SS A22 field. We detect luminous X-ray counterparts in five
In the outer regions of the habitable zone, the risk of transitioning into a globally frozen 'snowball' state poses a threat to the habitability of planets with the capacity to host water-based life.
The WARPS Survey. VI. Galaxy Cluster and Source Identifications from Phase I
We present in catalog form the optical identifications for objects from the first phase of the Wide Angle ROSAT Pointed Survey (WARPS). WARPS is a serendipitous survey of relatively deep, pointed
The WARPS survey - IV. The X-ray luminosity-temperature relation of high-redshift galaxy clusters
We present a measurement of the cluster X-ray luminosity–temperature (L–T) relation out to high redshift (z∼0.8). Combined ROSAT PSPC spectra of 91 galaxy clusters detected in the Wide Angle ROSAT
Extended X-Ray Emission around 4C 41.17 at z = 3.8
We present sensitive, high-resolution, X-ray imaging from Chandra of the high-redshift radio galaxy 4C 41.17 (z = 3.8). Our 150 ks Chandra exposure detects strong X-ray emission from a point source
A spherical harmonic approach to redshift distortion and a measurement of $\Omega_0$ from the 1.2-Jy IRAS Redshift Survey
We examine the nature of galaxy clustering in redshift space, using a method based on an expansion of the galactic density field in spherical harmonics and linear theory. Our approach provides a