J/ApJS/172/182 XMM Clusters of galaxies in COSMOS field (Finoguenov+ 2007)
The XMM-Newton wide-field survey in the COSMOS field:
statistical properties of clusters of galaxies.
Finoguenov A., Guzzo L., Hasinger G., Scoville N.Z., Aussel H.,
Bohringer H., Brusa M., Capak P., Cappelluti N., Comastri A., Giodini S.,
Griffiths R.E., Impey C., Koekemoer A.M., Kneib J.-P., Leauthaud A.,
Le Fevre O., Lilly S., Mainieri V., Massey R., McCracken H.J., Mobasher B.,
Murayama T., Peacock J.A., Sakelliou I., Schinnerer E., Silverman J.D.,
Smolcic V., Taniguchi Y., Tasca L., Taylor J.E., Trump J.R., Zamorani G.
<Astrophys. J. Suppl. Ser., 172, 182-195 (2007)>
=2007ApJS..172..182F 2007ApJS..172..182F
ADC_Keywords: Surveys ; X-ray sources ; Clusters, galaxy
Keywords: cosmology: observations - dark matter -
large-scale structure of universe - surveys
Abstract:
We present the results of a search for galaxy clusters in the first 36
XMM-Newton pointings on the Cosmic Evolution Survey (COSMOS) field. We
reach a depth for a total cluster flux in the 0.5-2keV band of
3x10-15ergs/cm2/s, having one of the widest XMM-Newton contiguous
raster surveys, covering an area of 2.1deg2. Cluster candidates are
identified through a wavelet detection of extended X-ray emission.
Verification of the cluster candidates is done based on a galaxy
concentration analysis in redshift slices of thickness 0.1-0.2 in
redshift, using the multiband photometric catalog of the COSMOS field
and restricting the search to z<1.3 and iAB<25. We identify 72
clusters and derive their properties based on the X-ray cluster
scaling relations. A statistical description of the survey in terms of
the cumulative log(N>S)-logS distribution compares well with previous
results, although yielding a somewhat higher number of clusters at
similar fluxes. The X-ray luminosity function of COSMOS clusters
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 (8x1042)-(2x1044)ergs/s, our survey is
in agreement with and adds significantly to the existing data on the
cluster luminosity function at high redshifts and implies no
substantial evolution at these luminosities to z=1.3.
Description:
For cluster detection, we used the XMM-Newton mosaic image in the
0.5-2keV band, based on the first 36 pointings of the XMM-Newton
observations of the COSMOS field.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 75 72 Catalog of the identified X-ray clusters
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See also:
B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2007)
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
J/ApJS/172/29 : XMM-Newton survey in COSMOS field. I. (Hasinger+, 2007)
J/ApJS/172/368 : XMM-Newton survey in COSMOS field. IV. (Mainieri+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [FGH2007] Sequential number
5- 13 F9.5 deg RAdeg Right ascension in decimal degrees
(J2000.0)
15- 21 F7.5 deg DEdeg Declination in decimal degrees (J2000.0)
23- 25 F3.1 arcmin r500 Estimated radius
27- 31 F5.2 10-17W/m2 Flux Cluster flux on the 0.5-2keV
33- 36 F4.2 10-17W/m2 e_Flux rms uncertainty on Flux
38- 41 F4.2 --- z Photometric redshift
43- 47 F5.2 10+13solMass M500 Estimated cluster mass
49- 52 F4.2 10+13solMass e_M500 rms uncertainty on M500
54- 58 F5.1 10+35W Lum 0.1-2.4keV luminosity
60- 63 F4.1 10+35W e_Lum 0.1-2.4keV luminosity
65- 68 F4.2 keV kT IGM temperature
70- 73 F4.2 keV e_kT rms uncertainty on kT
75 I1 --- r_z [0/1] Redshift reference (1)
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Note (1): Redshift reference as follows:
0 = redshift from SDSS DR4
1 = redshift estimate
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History:
From electronic version of the journal
References:
Hasinger et al., Paper I 2007ApJS..172...29H 2007ApJS..172...29H, Cat. J/ApJS/172/29
Cappelluti et al., Paper II 2007ApJS..172..341C 2007ApJS..172..341C
Brusa et al., Paper III 2007ApJS..172..353B 2007ApJS..172..353B
Mainieri et al., Paper IV 2007ApJS..172..368M 2007ApJS..172..368M, Cat. J/ApJS/172/368
Miyaji et al., Paper V 2007ApJS..172..396M 2007ApJS..172..396M
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 04-Mar-2008