J/MNRAS/468/662 X-CLASS/GROND catalogue (Ridl+, 2017)
Cosmology with XMM galaxy clusters:
the X-CLASS/GROND catalogue and photometric redshifts.
Ridl J., Clerc N., Sadibekova T., Faccioli L., Pacaud F., Greiner J.,
Kruhler T., Rau A., Salvato M., Menzel M.-L., Steinle H., Wiseman P.,
Nandra K., Sanders J.
<Mon. Not. R. Astron. Soc., 468, 662-684 (2017)>
=2017MNRAS.468..662R 2017MNRAS.468..662R (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; X-ray sources ; Redshifts
Keywords: techniques: photometric - catalogues - galaxies: clusters: general -
cosmology: observations - large-scale structure of Universe -
X-rays: galaxies: clusters
Abstract:
The XMM Cluster Archive Super Survey (X-CLASS) is a serendipitously
detected X-ray-selected sample of 845 galaxy clusters based on 2774
XMM archival observations and covering an approximately 90deg2
spread across the high-Galactic latitude (|b|>20°) sky. The
primary goal of this survey is to produce a well-selected sample of
galaxy clusters on which cosmological analyses can be performed. This
paper presents the photometric redshift follow-up of a high
signal-to-noise ratio subset of 265 of these clusters with declination
δ<+20° with Gamma-Ray Burst Optical and Near-Infrared
Detector (GROND), a 7-channel (grizJHK) simultaneous imager on the MPG
2.2-m telescope at the ESO La Silla Observatory. We use a newly
developed technique based on the red sequence colour-redshift
relation, enhanced with information coming from the X-ray detection to
provide photometric redshifts for this sample. We determine
photometric redshifts for 232 clusters, finding a median redshift of
z=0.39 with an accuracy of Δz=0.02(1+z) when compared to a
sample of 76 spectroscopically confirmed clusters. We also compute
X-ray luminosities for the entire sample and find a median bolometric
luminosity of 7.2x1043erg/s and a median temperature of 2.9 keV. We
compare our results to those of the XMM-XCS and XMM-XXL surveys,
finding good agreement in both samples. The X-CLASS catalogue is
available online at http://xmm-lss.in2p3.fr:8080/l4sdb/.
Description:
We present the first systematic follow-up of X-ray-selected galaxy
clusters with GROND along with a new method of determining photometric
redshifts based on both optical and X-ray data simultaneously.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 74 265 The X-CLASS/GROND cluster catalogue
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See also:
http://xmm-lss.in2p3.fr:8080/l4sdb/ : X-CLASS Home Page
Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- X-CLASS X-CLASS identification number
6- 12 F7.3 deg RAdeg X-ray centroid RIght ascension (J2000)
14- 20 F7.3 deg DEdeg X-ray centroid declination (J2000)
22- 25 F4.2 --- z ? GROND photometric redshift
26 A1 --- f_z [FD] Flag on z (1)
28- 32 F5.3 --- zlit ? Literature redshift
34- 37 A4 --- n_zlit Literature redshift type
39- 43 F5.3 ct/s CR Count rate of the cluster in the
[0.5-2keV] band
45- 47 F3.1 Mpc r500 ? Radius at which the average density of a
cluster is 500 times the critical density of
the Universe
49- 51 F3.1 Mpc e_r500 ? rms uncertainty on r500
52- 53 A2 --- n_r500 [* ] Note on r500 (2)
55- 58 F4.1 10-50W LX ? X-ray [0.5-2]keV band luminosity within r500
(L[0.5-2]keV500)
60- 62 F3.1 10-50W e_LX ? rms uncertainty on LX
63- 64 A2 --- n_LX [* ] Note on LX (2)
66- 68 F3.1 keV TL-T ? L-T temperature of the cluster derived from
the XXL scaling relation
70- 72 F3.1 keV e_TL-T ? rms uncertainty TL-T
73- 74 A2 --- n_TL-T [* ] Note on TL-T (2)
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Note (1): Flag as follows:
F = we were unable to obtain a secure redshift from the GROND observations
as discussed in Section 4.4,
D = the cluster has been classified as distant
Note (2): Note as follows:
* = we were unable to compute X-ray properties due to the lack of a secure
redshift
** = the X-ray-processing pipeline failed to converge on a reasonable value.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 03-Dec-2019