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CARS: the CFHTLS-Archive-Research Survey; I. Five-band multi-colour data from 37 sq. deg. CFHTLS-Wide observations
T. Erben, H. Hildebrandt, M. Lerchster +10
We present the CFHTLS-Archive-Research Survey (CARS). It is a virtual multi-colour survey based on public archive images from the CFHT-Legacy-Survey. Our main scientific interests…
Sources of contamination to weak lensing three-point statistics: constraints from N-body simulations
Elisabetta Semboloni, Catherine Heymans, Ludovic van Waerbeke +1
We investigate the impact of the observed correlation between a galaxies shape and its surrounding density field on the measurement of third order weak lensing shear statistics. Us…
Bayesian Galaxy Shape Measurement for Weak Lensing Surveys -II. Application to Simulations
T. D. Kitching, L. Miller, C. E. Heymans +2
We extend the Bayesian model fitting shape measurement method presented in Miller et al. (2007) and use the method to estimate the shear from the Shear TEsting Programme simulation…
First catalog of strong lens candidates in the COSMOS field
Cecile Faure, Jean-Paul Kneib, Giovanni Covone +19
We present the first catalog of 67 strong galaxy-galaxy lens candidates discovered in the 1.64 square degree Hubble Space Telescope COSMOS survey. Twenty of these systems display m…
Handbook for the GREAT08 Challenge: An image analysis competition for cosmological lensing
Sarah Bridle, John Shawe-Taylor, Adam Amara +35
The GRavitational lEnsing Accuracy Testing 2008 (GREAT08) Challenge focuses on a problem that is of crucial importance for future observations in cosmology. The shapes of distant g…
The dark matter environment of the Abell 901/902 supercluster: a weak lensing analysis of the HST STAGES survey
Catherine Heymans, Meghan E. Gray, Chien Y. Peng +21
We present a high resolution dark matter reconstruction of the z=0.165 Abell 901/902 supercluster from a weak lensing analysis of the HST STAGES survey. We detect the four main str…