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The galaxy-dark matter bias in the Garching-Bonn Deep Survey
Patrick Simon, Peter Schneider, Thomas Erben +3
We measured the bias and correlation factor of galaxies with respect to the dark matter using the aperture statistics including the aperture mass from weak gravitational lensing. T…
GaBoDS: The Garching-Bonn Deep Survey - III. Lyman-Break Galaxies in the Chandra Deep Field South
H. Hildebrandt, D. J. Bomans, T. Erben +10
We present first results of our search for high-redshift galaxies in deep CCD mosaic images. As a pilot study for a larger survey, very deep images of the Chandra Deep Field South…
Galaxy-galaxy lensing studies from COMBO-17
Martina Kleinheinrich, Hans-Walter Rix, Peter Schneider +4
We study the dark matter halos of galaxies with galaxy-galaxy lensing using the COMBO-17 survey. This survey offers an unprecedented data set for studying lens galaxies at z=0.2-0.…
The influence of redshift information on galaxy-galaxy lensing measurements
M. Kleinheinrich, H. -W. Rix, T. Erben +8
We investigate how galaxy-galaxy lensing measurements depend on the knowledge of redshifts for lens and source galaxies. Galaxy-galaxy lensing allows one to study dark matter halos…
GaBoDS: The Garching-Bonn Deep Survey -- II. Confirmation of EIS cluster candidates by weak gravitational lensing
Mischa Schirmer, Thomas Erben, Peter Schneider +2
We report the first confirmation of colour-selected galaxy cluster candidates by means of weak gravitational lensing. Significant lensing signals were identified in the course of t…