Constraining halo properties from galaxy-galaxy lensing and photo-z

Abstract

Here we present results from a maximum likelihood analysis of galaxy-galaxy weak lensing effects as measured in a 12.5' x 12.5' field obtained at the Nordic Optical Telescope, on La Palma, Spain. The analysis incorporates photometric redshifts and gives circular velocities consistent with previous weak lensing work.Comment: to appear in the proceedings of the Yale 2001 Cosmology Workshop on the Shapes of Galaxies and Their Halos (4 pages