HIROCS - a galaxy cluster survey at high redshifts
Abstract
As a step towards our understanding of galaxy evolution and for testing predictions of cosmological models we started a survey for galaxy clusters intending to identify candidates out to redshifts of ~1.5: HIROCS (= Heidelberg InfraRed/Optical Cluster Survey) is a multi-color survey (B, R, i, z and H) covering 11 square degrees in four fields on the sky. Our survey aims at a 5sigma detection of an L*+1 elliptical galaxy at z = 1.5. Classification of all objects and determination of photometric redshifts is done by the multi-color-classification scheme developed for the CADIS and COMBO-17 surveys. Cluster identification will be done by identifying overdensities in 3D-space (RA, DEC, zphot). First tests of our cluster finding algorithm on fields observed within CADIS and COMBO-17 revealed several cluster candidates.
Cite
@article{arxiv.astro-ph/0407615,
title = {HIROCS - a galaxy cluster survey at high redshifts},
author = {S. Falter and H. -J. Roeser and H. Hippelein and E. Bell and C. Wolf},
journal= {arXiv preprint arXiv:astro-ph/0407615},
year = {2009}
}