Distant galaxy clusters in the COSMOS field found by HIROCS

Abstract

We present the first high-redshift galaxy cluster candidate sample from the HIROCS survey found in the COSMOS field. It results from a combination of public COSMOS with proprietary H-band data on a 0.66 square degree part of the COSMOS field and comprises 12 candidates in the redshift range 1.23 < z < 1.55. We find an increasing fraction of blue cluster members with increasing redshift. Many of the blue and even some of the reddest member galaxies exhibit disturbed morphologies as well as signs of interaction.

5 pages, 5 figures, in print format, accepted for publication by A&A Letters

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Cited by in corpus (13)

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• A Comprehensive Study of Large Scale Structures in the GOODS-SOUTH Field up to z \sim 2.5
• Galaxy clusters at high redshift and evolution of brightest cluster galaxies
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• Clustering of red galaxies around the z=1.53 quasar 3C270.1
• Method of analysis of the spatial galaxy distribution at gigaparsec scales. I. Initial principles
• Identifying clustering at high redshift through actively star-forming galaxies