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arXiv · 0912.0039

X-ray groups and clusters of galaxies in the Subaru-XMM Deep Field

A. Finoguenov·M. G. Watson·M. Tanaka·C. Simpson·M. Cirasuolo·J. S. Dunlop·J. A. Peacock·D. Farrah·M. Akiyama·Y. Ueda·V. Smolcic·G. Stewart·S. Rawlings·C. van Breukelen·O. Almaini·L. Clewley·D. G. Bonfield·M. J. Jarvis·J. M. Barr·S. Foucaud·R. J. McLure·K. Sekiguchi·E. Egami
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Abstract

We present the results of a search for galaxy clusters in Subaru-XMM Deep Field. We reach a depth for a total cluster flux in the 0.5-2 keV band of 2x10^{-15} ergs cm^{-2} s^{-1} over one of the widest XMM-Newton contiguous raster surveys, covering an area of 1.3 square degrees. Cluster candidates are identified through a wavelet detection of extended X-ray emission. The red sequence technique allows us to identify 57 cluster candidates. We report on the progress with the cluster spectroscopic follow-up and derive their properties based on the X-ray luminosity and cluster scaling relations. In addition, 3 sources are identified as X-ray counterparts of radio lobes, and in 3 further sources, X-ray counterpart of radio lobes provides a significant fraction of the total flux of the source. In the area covered by NIR data, our identification success rate achieves 86%. We detect a number of radio galaxies within our groups and for a luminosity-limited sample of radio galaxies we compute halo occupation statistics using a marked cluster mass function. We compare the cluster detection statistics in the SXDF with the predictions of concordance cosmology and current knowledge of the X-ray cluster properties, concluding that a reduction of concordance sigma_8 value by 5% is required in order to match the prediction of the model and the data. This conclusion still needs verification through the completion of cluster follow-up.

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BibTeXRIS

A. Finoguenov, M. G. Watson, M. Tanaka, C. Simpson, M. Cirasuolo, J. S. Dunlop, J. A. Peacock, D. Farrah, M. Akiyama, Y. Ueda, V. Smolcic, G. Stewart, S. Rawlings, C. van Breukelen, O. Almaini, L. Clewley, D. G. Bonfield, M. J. Jarvis, J. M. Barr, S. Foucaud, R. J. McLure, K. Sekiguchi, E. Egami. 2009-11-30. X-ray groups and clusters of galaxies in the Subaru-XMM Deep Field. https://doi.org/10.1111/j.1365-2966.2010.16256.x

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