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Cosmic Shear from STIS pure parallels: III. Analysis of Cycle 9 pure parallels
J. -M. Miralles, T. Erben, H. Haemmerle +4
Following the detection of a cosmic shear signal at the 30'' scale using archival parallel data from the STIS CCD camera onboard HST in Haemmerle et al. (2002), we analyzed a large…
Galaxy-galaxy lensing results from COMBO-17
Martina Kleinheinrich, Peter Schneider, Thomas Erben +4
We use galaxy-galaxy lensing to study the statistical properties of the dark matter halos of galaxies. Our data is taken from the COMBO-17 survey which has imaged 1 square degree i…
Mass-detection of a matter concentration projected near the cluster Abell 1942: Dark clump or high-redshift cluster?
T. Erben, L. van Waerbeke, Y. Mellier +4
A weak-lensing analysis of wide-field - and -band images centered on the cluster Abell 1942 has uncovered a mass concentration arcminutes South of the cluster center…
Detection of shear due to weak lensing by large-scale structure
P. Schneider, L. van Waerbeke, Y. Mellier +3
We present evidence for a coherent shear signal in a field containing the z=1.2 radio-source PKS1508-05. Since there were no intervening mass concentrations known before targeting…