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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
X-ray groups and clusters of galaxies in the Subaru-XMM Deep Field
Monthly Notices of the Royal Astronomical Society, Volume 403, No. 4, Year 2010
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Description
We present the results of a search for galaxy clusters in the Subaru-XMM Deep Field (SXDF). We reach a depth for a total cluster flux in the 0.5-2 keV band of 2 × 10-15 erg cm-2 s-1 over one of the widest XMM-Newton contiguous raster surveys, covering an area of 1.3 deg2. 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, three sources are identified as X-ray counterparts of radio lobes, and in three further sources, an X-ray counterpart of the radio lobes provides a significant fraction of the total flux of the source. In the area covered by near-infrared data, our identification success rate achieves 86 per cent. 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 that in the literature and provide the modelling using the concordance cosmology combined with current knowledge of the X-ray cluster properties. The joint cluster log(N) - log(S) is overpredicted by the model, and an agreement can be achieved through a reduction of the concordance σ8 value by 5 per cent. Having considered the dn/dz and the X-ray luminosity function of clusters, we conclude that to pin down the origin of disagreement a much wider (50 deg2) survey is needed. © 2010 The Authors. Journal compilation © 2010 RAS.
Authors & Co-Authors
Finoguenov, Alexis V.
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
United States, Baltimore
University of Maryland, Baltimore County Umbc
Watson, Mike G.
United Kingdom, Leicester
University of Leicester
Tanaka, Masaomi
Germany, Garching Bei Munchen
European Southern Observatory
Simpson, Chris J.S.M.
United Kingdom, Liverpool
Liverpool John Moores University
Cirasuolo, Michele
United Kingdom, Edinburgh
The University of Edinburgh
James S. Dunlop, James S.
United Kingdom, Edinburgh
The University of Edinburgh
Peacock, John A.
United Kingdom, Edinburgh
The University of Edinburgh
Farrah, Duncan G.
United Kingdom, Brighton
University of Sussex
Akiyama, Masayuki
Japan, Sendai
Tohoku University
Ueda, Yoshihiro
Japan, Kyoto
Kyoto University
Smolčić, Vernesa
United States, Pasadena
California Institute of Technology
Stewart, Gordon C.
United Kingdom, Leicester
University of Leicester
Rawlings, Steve G.
Unknown Affiliation
Almaini, Omar
United Kingdom, Nottingham
University of Nottingham
Bonfield, David G.
United Kingdom, Hatfield
University of Hertfordshire
Jarvis, Matthew J.
United Kingdom, Hatfield
University of Hertfordshire
Foucaud, Sébastien
United Kingdom, Nottingham
University of Nottingham
Mclure, Ross J.
United Kingdom, Edinburgh
The University of Edinburgh
Sekiguchi, Kazuhiro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Egami, Eiichi E.
United States, Tucson
The University of Arizona
Statistics
Citations: 97
Authors: 20
Affiliations: 14
Identifiers
Doi:
10.1111/j.1365-2966.2010.16256.x
ISSN:
00358711
Research Areas
Environmental
Study Design
Cross Sectional Study
Cohort Study
Study Approach
Quantitative