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arXiv · 1111.0141

The XMM-BCS galaxy cluster survey: I. The X-ray selected cluster catalog from the initial 6 deg$^2$

R. Šuhada·J. Song·H. Böhringer·J. J. Mohr·G. Chon·A. Finoguenov·R. Fassbender·S. Desai·R. Armstrong·A. Zenteno·W. A. Barkhouse·E. Bertin·E. J. Buckley-Geer·S. M. Hansen·F. W. High·H. Lin·M. Mühlegger·C. C. Ngeow·D. Pierini·G. W. Pratt·M. Verdugo·D. L. Tucker
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Abstract

The XMM-Newton - Blanco Cosmology Survey project (XMM-BCS) is a coordinated X-ray, optical and mid-infrared cluster survey in a field also covered by Sunyaev-Zel'dovich effect surveys by the South Pole Telescope and the Atacama Cosmology Telescope. The aim of the project is to study the cluster population in a 14 deg$^2$ field. In this work, we present a catalog of 46 X-ray selected clusters from the initial 6 deg$^2$ survey core. We describe the XMM-BCS source detection pipeline and derive physical properties of the clusters. We provide photometric redshift estimates derived from the BCS imaging data and spectroscopic redshift measurements for a low redshift subset of the clusters. We derive the cluster log N - log S relation using an approximation to the survey selection function and find it in good agreement with previous studies. We carry out an initial comparison between X-ray luminosity derived masses and masses from optical estimators from the Southern Cosmology Survey for a subset of the cluster sample. Optical masses based on cluster richness and total optical luminosity are found to be significantly higher than the X-ray values. (abridged)

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R. Šuhada, J. Song, H. Böhringer, J. J. Mohr, G. Chon, A. Finoguenov, R. Fassbender, S. Desai, R. Armstrong, A. Zenteno, W. A. Barkhouse, E. Bertin, E. J. Buckley-Geer, S. M. Hansen, F. W. High, H. Lin, M. Mühlegger, C. C. Ngeow, D. Pierini, G. W. Pratt, M. Verdugo, D. L. Tucker. 2011-11-01. The XMM-BCS galaxy cluster survey: I. The X-ray selected cluster catalog from the initial 6 deg$^2$. https://doi.org/10.1051/0004-6361/201117214

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