Galaxy population in distant galaxy clusters. I. Cl 0939+472 (z=0.41) and Cl 0016+161 (z=0.54)
نویسندگان
چکیده
منابع مشابه
Quantifying Substructure Using Galaxy-Galaxy Lensing in Distant Clusters
We present high-resolution mass reconstructions for five massive cluster-lenses spanning a redshift range from z = 0.18–0.57 utilizing archival Hubble Space Telescope (HST) data and applying galaxy-galaxy lensing techniques. These detailed mass models were obtained by combining constraints from the observed strong and weak lensing regimes. Quantifying the local weak distortions in the shear map...
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متن کاملX-ray Surveys of Distant Galaxy Clusters
I review recent observational progress in the search for and study of distant galaxy clusters in the X-ray band, with particular emphasis on the evolution of the abundance of X-ray clusters out to z ∼1. Several on-going deep X-ray surveys have led to the discovery of a sizeable population of clusters at z > 0.5 and have the sensitivity to detect clusters beyond redshift one. These surveys have ...
متن کاملRecent Chandra and Xmm Observations of Two Very Different Galaxy Clusters: Rbs797 and Cl 0939+4713
RBS797 and CL 0939+4713 are two intermediate red-shift clusters (z = 0.35 − 0.41). They have very different morphologies but both show surprisingly interesting structures. RBS797 looks relaxed, with an almost circular morphology; a CHANDRA observation of this cluster has revealed two deep depressions in the X-ray emission near the core. CL 0939+4713 has instead an irregular morphology with evid...
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We present a detailed study of the cluster CL 0048-2942, located at z ∼ 0.64, based on a photometric and spectro-scopic catalogue of 54 galaxies in a 5 × 5 arcmin 2 region centred in that cluster. Of these, 23 galaxies were found to belong to the cluster. Based on this sample, the line-of-sight velocity dispersion of the cluster is approximately 680 ± 140 km/s. We have performed stellar populat...
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics Supplement Series
سال: 1996
ISSN: 0365-0138,1286-4846
DOI: 10.1051/aas:1996182