J/A+A/564/A54 2XMMi/SDSS Galaxy Cluster Survey. III. (Takey+, 2014)
The 2XMMi/SDSS Galaxy Cluster Survey.
III. Clusters associated with spectroscopically targeted luminous red
galaxies in SDSS-DR10.
Takey A., Schwope A., Lamer G.
<Astron. Astrophys. 564, A54 (2014)>
=2014A&A...564A..54T 2014A&A...564A..54T
ADC_Keywords: Surveys ; X-ray sources
Keywords: X-rays: galaxies: clusters - galaxies: clusters: general - surveys -
catalogs - techniques: spectroscopic
Abstract:
We present a sample of 383 X-ray selected galaxy groups and clusters
with spectroscopic redshift measurements (up to z∼0.79) from the
2XMMi/SDSS Galaxy Cluster Survey. The X-ray cluster candidates were
selected as serendipitously detected sources from the 2XMMi-DR3
catalogue that were located in the footprint of the Sloan Digital Sky
Survey (SDSS-DR7). The cluster galaxies with available spectroscopic
redshifts were selected from the SDSS-DR10. We developed an algorithm
for identifying the cluster candidates that are associated with
spectroscopically targeted luminous red galaxies and for constraining
the cluster spectroscopic redshift. A cross-correlation of the
constructed cluster sample with published optically selected cluster
catalogues yielded 264 systems with available redshifts. The present
redshift measurements are consistent with the published values. The
current cluster sample extends the optically confirmed cluster sample
from our cluster survey by 67 objects. Moreover, it provides
spectroscopic confirmation for 78 clusters among our published cluster
sample, which previously had only photometric redshifts. Of the new
cluster sample that comprises 67 systems, 55 objects are newly X-ray
discovered clusters and 52 systems are sources newly discovered as
galaxy clusters in optical and X-ray wavelengths. Based on the
measured redshifts and the fluxes given in the 2XMMi-DR3 catalogue, we
estimated the X-ray luminosities and masses of the cluster sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 255 145 The 2XMMi/SDSS Galaxy Cluster Survey (III)
table1.fits 2880 13 FITS version of table1
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See also:
IX/39 : XMM-Newton 2nd Serendipitous Source Catalogue (2XMM, 2007)
IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3 (XMM-SSC, 2010)
J/A+A/534/A120 : 2XMMi/SDSS Galaxy Cluster Survey (Takey+, 2011)
J/A+A/558/A75 : 2XMMi/SDSS Galaxy Cluster Survey. II. (Takey+, 2013)
http://www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- Seq X-ray detection number in the 2XMMi-DR3 (1)
10- 13 A4 --- --- [2XMM]
14 A1 --- n_2XMM [I] when 2XMMi release (Cat. IX/40)
16- 31 A16 --- 2XMM IAU name given in the 2XMMi-DR3 cat. (1)
34- 42 F9.5 deg RAdeg X-ray detection right ascension (J2000) (1)
44- 52 F9.5 deg DEdeg X-ray detection declination (J2000) (1)
54- 63 I010 --- ObsID XMM-Newton observation number (1)
65- 70 F6.4 --- z Cluster redshift (identical to zs)
72- 75 F4.2 kpc/arcsec Scale Scale at the cluster redshift
77- 83 F7.2 kpc R500 Estimated radius R500 (mean density is 500
the critical density of the Universe)
85- 90 F6.2 10-17W/m2 Fcat X-ray flux in [0.5-2.0]keV band (1)
92- 95 F4.2 10-17W/m2 e_Fcat Error in Fcat
97-102 F6.2 10+35W Lcat X-ray luminosity in [0.5-2]keV band
(in 1042erg/s)
104-108 F5.2 10+35W e_Lcat Error in Lcat
110-116 F7.2 10+35W L500 X-ray bolometric luminosity within R500
118-123 F6.2 10+35W e_L500 Error in L500
125-129 F5.2 10+13Msun M500 Mass within R500
131-135 F5.2 10+13Msun e_M500 Error in M500
137-155 I19 --- BCG Id in the SDSS-DR10 of the likely BCG (2)
157-165 F9.5 deg RABdeg Likely BCG right ascension (J2000) (2)
167-175 F9.5 deg DEBdeg Likely BCG declination (J2000) (2)
177-182 F6.3 mag rmag Likely BCG apparent magnitude in r-band
184-189 F6.4 --- zs Cluster spectroscopic redshift (2)
191-192 I2 --- Ns Number of cluster galaxies with spectra (2)
194-199 F6.4 --- zp Cluster photometric redshift (2)
201-202 I2 --- Np Number of cluster galaxies with zp (2)
204-209 F6.2 kpc Offset Optical/X-ray offset
211-245 A35 --- NED Literature name (NED)
247-255 A9 --- Note A note about the status of each cluster (3)
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Note (1): Parameters extracted from the 2XMMi-DR3 catalogue (IX/41)
Note (2): These parameters are obtained from the current developed optical
cluster detection algorithm.
Note (3): The note is:
Paper-III = new cluster from the current work
Paper-II = a cluster in Paper II (J/A+A/558/A75) and confirmed
spectroscopically with the present procedure
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Acknowledgements:
Ali Takey, atakey(at)aip.de
References:
Takey et al., Paper I 2011A&A...534A.120T 2011A&A...534A.120T, Cat J/A+A/534/A120
Takey et al., Paper II 2013A&A...558A..75T 2013A&A...558A..75T, Cat J/A+A/558/A75
(End) Patricia Vannier [CDS] 04-Mar-2014