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HIROCS - a galaxy cluster survey at high redshifts

S. Falter·H. -J. Roeser·H. Hippelein·E. Bell·C. Wolf
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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.

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S. Falter, H. -J. Roeser, H. Hippelein, E. Bell, C. Wolf. 2004-07-29. HIROCS - a galaxy cluster survey at high redshifts. https://doi.org/10.1017/s1743921304000493

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