Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-12
Astron.Astrophys. 420 (2004) 75-78
Astronomy and Astrophysics
Astrophysics
4 pages, 4 figures, submitted to A&A Letters
Scientific paper
10.1051/0004-6361:20041072
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 z~0.2, 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 z~0.45.
Erben Thomas
Meisenheimer Klaus
Schirmer Mischa
Schneider Peter
Wolf Christian
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