Volume 420, Number 1, June II 2004
|Page(s)||75 - 78|
|Section||Cosmology (including clusters of galaxies)|
|Published online||14 May 2004|
GaBoDS: The Garching-Bonn Deep Survey*
II. Confirmation of EIS cluster candidates by weak gravitational lensing
Institut für Astrophysik und Extraterrestrische Forschung (IAEF), Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
2 Department of Physics, Denys Wilkinson Bldg., University of Oxford, Keble Road, Oxford, UK
3 Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
Corresponding author: M. Schirmer, firstname.lastname@example.org
Accepted: 8 March 2004
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 the shear-selection programme of dark matter haloes in the Garching-Bonn Deep Survey, which currently covers 20 square degrees of deep, high-quality imaging data on the southern sky. The detection was made in a field that was previously covered by the ESO Imaging Survey (EIS) in 1997. A highly significant shear-selected mass-concentration perfectly coincides with the richest EIS cluster candidate at , thus confirming its cluster nature. Several other shear patterns in the field can also be identified with cluster candidates, one of which could possibly be part of a filament at .
Key words: cosmology: dark matter / galaxies: clusters: general / cosmology: gravitational lensing
© ESO, 2004
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