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OATS-DAUT SEMINAR
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Speaker:
Alexis Finoguenov (Max-Planck-Institut für extraterrestrische Physik & University of Maryland - Baltimore County)
Title:
Groups and clusters of galaxies in deep XMM-Newton surveys
Date: Wednesday, June 14th, 2006
Time: 12:00 noon
Venue: Villa Bazzoni
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Abstract:
I my talk I will review the recent progress on cluster search in
several projects that made use of XMM-Newton data: COSMOS, SXDS-UDS,
CDFS, Lockman Hole and present the results on cluster identification
using the photometric redshift estimates. A statistical description of
surveys in terms of the cumulative log(N>S)-log(S) distribution
compares well with the previous results, although yielding a somewhat
higher number of clusters at similar fluxes. The luminosity function
of clusters in deep surveys matches well the results of nearby
surveys, providing a comparably tight constraint on the faint end
slope of alpha=1.93+/-0.04. For the probed luminosity range of
8x10^42-2x10^44 ergs/s, the surveys are in agreement with and add
significantly to the existing data on the cluster luminosity function
at high redshifts and imply no substantial evolution at these
luminosities to z=1.3.
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