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A bias in cosmic shear from galaxy selection: results from ray-tracing simulations
Jan Hartlap, Stefan Hilbert, Peter Schneider +1
We identify and study a previously unknown systematic effect on cosmic shear measurements, caused by the selection of galaxies used for shape measurement, in particular the rejecti…
The UV galaxy luminosity function at z=3-5 from the CFHT Legacy Survey Deep fields
Remco F. J. van der Burg, Hendrik Hildebrandt, Thomas Erben
We measure and study the evolution of the UV galaxy Luminosity Function (LF) at z=3-5 from the largest high-redshift survey to date, the Deep part of the CFHT Legacy Survey. We als…
J0454-0309: Evidence for a strong lensing fossil group falling into a poor galaxy cluster
Mischa Schirmer, Sherry Suyu, Tim Schrabback +3
We have discovered a strong lensing fossil group (J0454) at z=0.26, projected near the well-studied cluster MS0451-0305. Using multicolour Subaru/Suprime-Cam and CFHT/Megaprime ima…