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19 papers · 1 filter
The Serendipitous Discovery of a Group or Cluster of young Galaxies at z=2.40 in Deep Hubble Space Telescope WFPC2 Images
Sebastian M. Pascarelle, Rogier A. Windhorst, Simon P. Driver +2
We report the serendipitous discovery of a group or cluster of young galaxies at 2.40 in a 24-orbit HST/WFPC2 exposure of the field around the weak radio galaxy 53W002. Po…
Strong Angular Clustering of Very Blue Galaxies: Evidence of a Low Redshift Population
Stephen D. Landy, Alexander S. Szalay, David C. Koo
We have studied galaxy two-point angular correlations as a function of color using 4-m plate photometry in two independent fields. Each field consists of over 2900 galaxies with ma…
Hubble Space Telescope Observations of the Lensing Cluster Abell 2218
J. -P. Kneib, R. S. Ellis, I. Smail +2
We present a striking new Hubble Space Telescope (HST) observation of the rich cluster Abell 2218 taken with the Wide-Field and Planetary Camera (WFPC2). HST's restored image quali…
The 2D Power Spectrum of the Las Campanas Redshift Survey: Detection of Excess Power on 100 h^{-1} Mpc Scales
S. D. Landy, S. A. Shectman, H. Lin +3
We have measured the 2 dimensional (2D) power spectrum of the Las Campanas Redshift Survey on scales between 30 and 200 Mpc (q_0=0.5, H_o=100h km sec^{-1} Mpc^{-1}). Such an analys…
Lensing by Distant Clusters: HST Observations of Weak Shear in the Field of 3C324
Ian Smail, Mark Dickinson
We present the detection of weak gravitational lensing in the field of the radio galaxy 3C324 (z=1.206) using deep HST imaging. ~From an analysis of the shapes of faint R=24.5-27.5…
Galaxy Harassment and the Evolution of Clusters of Galaxies
Ben Moore, Neal Katz, George Lake +2
Disturbed spiral galaxies with high rates of star formation pervaded clusters of galaxies just a few billion years ago, but nearby clusters exclude spirals in favor of ellipticals.…