J/A+A/470/821 BLOX Cluster catalog (Dietrich+, 2007)
BLOX: The Bonn Lensing, Optical, and X-ray selected galaxy clusters -
I. Cluster catalog construction.
Dietrich J.P., Erben T., Lamer G., Schneider P., Schwope A., Hartlap J.,
Maturi M.
<Astron. Astrophys. 470, 821 (2007)>
=2007A&A...470..821D 2007A&A...470..821D
ADC_Keywords: Clusters, galaxy - Gravitational lensing - X-ray sources
Keywords: gravitational waves - galaxies: clusters: general -
X-rays: galaxies: clusters - catalogs - surveys
Abstract:
The mass function of galaxy clusters is an important cosmological
probe. Differences in the selection method could potentially lead to
biases when determining the mass function. From the optical and X-ray
data of the XMM-Newton Follow-Up Survey, we obtain a sample of galaxy
cluster candidates using weak gravitational lensing, the optical
Postman matched filter method, and a search for extended X-ray
sources. We develop our weak lensing search criteria by testing the
performance of the aperture mass statistic on realistic ray-tracing
simulations matching our survey parameters and comparing two filter
functions. We find that the dominant noise source for our survey is
shape noise and that spurious cluster detection due to projections of
large-scale structures are negligible. Our full cluster catalog has
155 cluster candidates, 116 found with the Postman matched filter, 59
extended X-ray sources, and 31 shear selected potential clusters. Most
of these cluster candidates were not previously known. The present
catalog will be a solid foundation for studying possible selection
effects in either method.
Description:
Galaxy cluster candidates in the XMM-Newton Follow-Up Survey detected
with X-ray, optical matched filter, and weak lensing methods. Table 1
is the list of all cluster candidates in this survey with any method.
This table lists the cluster candidates' names, positions, and
provides information on which methods led to a detection. Individual
detection parameters are given in Table 2 (X-ray), Table 3 (optical
matched filter), and Table 4 (weak lensing).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 58 155 Catalog of all cluster candidates
notes.dat 76 36 Individual notes
table2.dat 82 59 X-ray selected cluster candidates
table3.dat 58 116 Optically selected cluster candidates
table4.dat 52 31 Weak lensing selected cluster candidates
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See also:
B/bax : The BAX Database (Blanchard+, 2004)
J/ApJS/56/403 : X-ray survey of clusters of galaxies. IV. (Kowalski+, 1984)
J/MNRAS/274/75 : Redshifts of ROSAT X-ray brightest clusters (Crawford+, 1995)
J/MNRAS/281/799 : XBACs, the sample (Ebeling+, 1996)
J/ApJS/129/435 : NORAS galaxy cluster survey. I. (Bohringer+, 2000)
J/A+A/278/379 : X-ray Emission from Abell Clusters of Galaxies (Briel+ 1993)
J/ApJ/566/744 : EEMSS new X-ray clusters (Lewis+, 2002)
J/AJ/126/2740 : X-ray emission of RASS Abell clusters (Ledlow+, 2003)
J/A+A/420/61 : X-ray clusters of galaxies (Schuecker+, 2004)
J/A+A/423/449 : RASS-SDSS Galaxy Clusters Survey. I. (Popesso+, 2004)
J/A+A/425/367 : REFLEX Galaxy Cluster Survey catalogue (Boehringer+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [BLOX]
6- 19 A14 --- BLOX Name of cluster candidate, JHHMM.m+DDMM.m
21- 22 I2 h RAh Right ascension (J2000)
24- 25 I2 min RAm Right ascension (J2000)
27- 30 F4.1 s RAs Right ascension (J2000)
32 A1 --- DE- Declination sign (J2000)
33- 34 I2 deg DEd Declination (J2000)
36- 37 I2 arcmin DEm Declination (J2000)
39- 40 I2 arcsec DEs Declination (J2000)
42 I1 --- NXray Number of X-ray sources for this cluster
44 I1 --- NOpt Number of matched filter sources for this cluster
46 I1 --- NLens Number of weak lensing sources for this cluster
48- 52 F5.3 --- z ? Redshift from literature
54- 58 A5 --- Notes Notes on cluster, in notes.dat file
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Note Note number
4- 76 A73 --- Text Text of the note
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [BLOX]
6- 19 A14 --- BLOX Name of cluster candidate, JHHMM.m+DDMM.m
21- 22 I2 h RAh Right ascension (J2000)
24- 25 I2 min RAm Right ascension (J2000)
27- 30 F4.1 s RAs Right ascension (J2000)
32 A1 --- DE- Declination sign (J2000)
33- 34 I2 deg DEd Declination (J2000)
36- 37 I2 arcmin DEm Declination (J2000)
39- 40 I2 arcsec DEs Declination (J2000)
42- 50 F9.1 --- DetML Detection likelihood
52- 59 F8.1 --- ExtML Extent likelihood
61- 64 F4.1 arcsec Ext Extend
66- 68 F3.1 arcsec e_Ext Extend error
70- 75 F6.2 10-17W/m2 Flux X-ray Flux (0.5-2 keV)
77- 80 F4.2 10-17W/m2 e_Flux Flux error (0.5-2 keV)
82 A1 --- Grade [+o-] Grade of cluster (G1)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [BLOX]
6- 19 A14 --- BLOX Name of cluster candidate, JHHMM.m+DDMM.m
20 A1 --- n_BLOX [*] Note (1)
22- 23 I2 h RAh Right ascension (J2000)
25- 26 I2 min RAm Right ascension (J2000)
28- 31 F4.1 s RAs Right ascension (J2000)
33 A1 --- DE- Declination sign (J2000)
34- 35 I2 deg DEd Declination (J2000)
37- 38 I2 arcmin DEm Declination (J2000)
40- 41 I2 arcsec DEs Declination (J2000)
43- 46 F4.1 --- sigma Significance of detection
48- 50 F3.1 --- z Estimated redshift
52- 56 F5.1 --- Lambdacl Cluster richness
58 A1 --- Grade [+o-] Grade of cluster (G1)
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Note (1): The properties reported for clusters BLOX J1023.6+0411.1 and
BLOX J1022.9+0411.9 are averages of their independent detections
in the RBS 0864-N and RBS 0864-S pointing.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [BLOX]
6- 19 A14 --- BLOX Name of cluster candidate, JHHMM.m+DDMM.m
21- 22 I2 h RAh Right ascension (J2000)
24- 25 I2 min RAm Right ascension (J2000)
27- 30 F4.1 s RAs Right ascension (J2000)
32 A1 --- DE- Declination sign (J2000)
33- 34 I2 deg DEd Declination (J2000)
36- 37 I2 arcmin DEm Declination (J2000)
39- 40 I2 arcsec DEs Declination (J2000)
42- 44 F3.1 --- sigma Significance of detection
46- 49 I4 kpc Radius Radius of filter function (in kpc/h)
51- 52 I2 --- Nfilt No. of filter radii this cluster was detected
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Global Notes:
Note (G1): Grades are as follows:
+ = obvious real cluster
o = probable real cluster, may be prone to projection effects.
- = very poor clusters or groups, or artifacts.
Acknowledgements:
J.P. Dietrich, jdietric(at)eso.org
(End) J.P. Dietrich [AIfA, Univ. of Bonn], Patricia Vannier [CDS] 22-May-2007