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J/A+A/462/875 Garching-Bonn Deep Survey (GaBoDS) IX (Schirmer+, 2007)
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Beginning of ReadMe :J/A+A/462/875 Garching-Bonn Deep Survey (GaBoDS) IX (Schirmer+, 2007)
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GaBoDS: the Garching-Bonn Deep Survey.
IX. A sample of 158 shear-selected mass concentration candidates.
Schirmer M., Erben T., Hetterscheidt M., Schneider P.
<Astron. Astrophys., 462, 875-887 (2007)>
=2007A&A...462..875S
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ADC_Keywords: Clusters, galaxy ; Redshifts
Keywords: cosmology: dark matter - galaxies: clusters: general -
gravitational lensing
Abstract:
The aim of the present work is the construction of a mass-selected
galaxy cluster sample based on weak gravitational lensing methods.
This sample will be subject to spectroscopic follow-up observations.
We apply the mass aperture statistics (S-statistics) and a new
derivative of it (the P-statistics) to 19 square degrees of high
quality, single colour wide field imaging data obtained with the
WFI@MPG/ESO 2.2m telescope. For the statistics a family of filter
functions is used that approximates the expected tangential radial
shear profile and thus allows for the efficient detection of mass
concentrations. The exact performance of the P-statistics still needs
to be evaluated by means of simulations.
Description:
The GaBoDS was conducted with the wide field imager (hereafter
WFI@2.2) of the 2.2m MPG/ESO telescope in the R-band. It is to about
80% a virtual survey, which means most of the data was not taken by us
but collected from the ESO archive.