J/MNRAS/369/1334 FSVS Cluster Catalogue (Sochting+, 2006)
The FSVS Cluster Catalogue: galaxy clusters and groups in the
Faint Sky Variability Survey.
Sochting I.K., Huber M.E., Clowes R.G., Howell S.B.
<Mon. Not. R. Astron. Soc., 369, 1334-1350 (2006)>
=2006MNRAS.369.1334S 2006MNRAS.369.1334S
ADC_Keywords: Clusters, galaxy ; Redshifts ; Galaxies, photometry
Keywords: methods: statistical - catalogues - galaxies: clusters: general
Abstract:
We describe a large sample of 598 galaxy clusters and rich groups
discovered in the data of the Faint Sky Variability Survey (FSVS). The
clusters have been identified using a fully automated, semiparametric
technique based on a maximum likelihood approach applied to Voronoi
tessellation, and enhanced by colour discrimination. The sample covers
a wide range of richness, has a density of ∼28 clusters/deg2, and
spans a range of estimated redshifts of 0.05<z<0.9 with mean
=0.345. Assuming the presence of a cluster red sequence, the
uncertainty of the estimated cluster redshifts is assessed to be
σ∼0.03. Containing over 100 clusters with z>0.6, the catalogue
contributes substantially to the current total of optically selected,
intermediate-redshift clusters, and complements the existing, usually
X-ray selected, samples. The FSVS fields are accessible for
observation throughout the whole year, making them particularly suited
for large follow-up programmes. The construction of this FSVS Cluster
Catalogue completes a fundamental component of our continuing
programmes to investigate the environments of quasars and the chemical
evolution of galaxies. We publish here the list of all clusters with
their basic parameters, and discuss some illustrative examples in more
detail. The full FSVS Cluster Catalogue, together with images and
lists of member galaxies etc., will be issued as part of the 'NOAO
(National Optical Astronomy Observatories) data products', and
accessible at http://www.noao.edu/dpp/ . We describe the format of
these data and access to them.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 60 600 The basic FSVS Cluster Catalogue
catalog.dat 192 593 FSVS cluster catalogue
cluster/* . 593 FSVS cluster galaxies
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See also:
http://www-astro.physics.ox.ac.uk/~iks/FSVScatalogue/ : FSVS Home Page
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- --- [FSVS_CL]
8- 20 A13 --- FSVS_CL Cluster name (HHMMSS+DDMMSS) (G1)
22- 23 I2 h RAh Right ascension (J2000) (G2)
25- 26 I2 min RAm Right ascension (J2000) (G2)
28- 29 I2 s RAs Right ascension (J2000) (G2)
31 A1 --- DE- Declination sign (J2000) (G2)
32- 33 I2 deg DEd Declination (J2000) (G2)
35- 36 I2 arcmin DEm Declination (J2000) (G2)
38- 39 I2 arcsec DEs Declination (J2000) (G2)
41- 44 F4.2 --- z Estimated redshift
47- 60 A14 --- FSVSCL Cluster name in file "catalog.dat" (G1)
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Field ? Field number
14- 19 A6 --- --- [FSVSCL]
21- 34 A14 --- FSVSCL Cluster name (JHHMMSS+DDMMSS) (G1)
39- 40 I2 h RAh [0/24] Right ascension (J2000) (G2)
42- 43 I2 min RAm Right ascension (J2000) (G2)
45- 46 I2 s RAs Right ascension (J2000) (G2)
50 A1 --- DE- Declination sign (J2000) (G2)
51- 52 I2 deg DEd Declination (J2000) (G2)
54- 55 I2 arcmin DEm Declination (J2000) (G2)
57- 58 I2 arcsec DEs Declination (J2000) (G2)
66- 68 I3 --- Nmem Number of member galaxies
75- 78 I4 --- Nall Number of all objects contained within the
cluster boundary
85- 91 F7.3 arcmin+2 Area Area occupied by the cluster
99-104 F6.3 arcmin-2 Dens Projected number density of member galaxies
113-117 F5.2 mag BCG I magnitude of the brightest cluster galaxy
122-126 F5.2 mag m3 I magnitude of the third brightest member
galaxy
133-137 F5.3 mag max(V-I) Maximum colour of the color-magnitude filter
in which the cluster has been detected
145-147 I3 --- r Richness of the cluster
155 I1 --- f_r [0/1] 1: richness underestimated
162-166 F5.3 --- z Estimated redshift
170 I1 --- Bound [0/1] 1: parameters of the cluster may have
been influenced by the field boundary
176-183 F8.3 --- CRSchi Zero-point of the cluster red sequence
normalized to I=17mag
188-192 F5.3 --- CRSprob Slope of the cluster red sequence
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Byte-by-byte Description of file (5 headlines): cluster/*
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [FSVS]
5- 23 A19 --- FSVS FSVS designation (JHHMMSS.ss+DDMMSS.s)
28- 38 A11 --- IName Internal name
43- 49 F7.2 pix Xpos X position
54- 60 F7.2 pix Ypos Y position
65- 66 I2 h RAh Right ascension (J2000)
68- 69 I2 min RAm Right ascension (J2000)
71- 75 F5.2 s RAs Right ascension (J2000)
79 A1 --- DE- Declination sign (J2000)
80- 81 I2 deg DEd Declination (J2000)
83- 84 I2 arcmin DEm Declination (J2000)
86- 89 F4.1 arcsec DEs Declination (J2000)
94-102 F9.4 --- chi2 ?=* chi+2 value
107-113 F7.4 mag Bmag ?=99. Harris B magnitude
119-124 F6.4 mag e_Bmag ?=9.99 rms uncertainty on B magnitude
132-135 F4.1 --- f_Bmag ?=9.99 Unexplained Flag on B magnitude
141-146 F6.2 arcsec BFWHM ?=999.99 FWHM in B band
154-157 F4.2 --- Bs/g ?=9.99 Stellarity parameter from B band (1)
162-168 F7.4 mag Vmag ?=99. Harris V magnitude
174-179 F6.4 mag e_Vmag ?=9.99 rms uncertainty on Vmag
186-190 F5.1 --- f_Vmag ?=9.99 Unexplained Flag on Vmag
197-201 F5.2 arcsec VFWHM ?=999.99 FWHM in V band
209-212 F4.2 --- Vs/g ?=9.99 Stellarity parameter from V band (1)
217-223 F7.4 mag Imag ?=99. RGO I magnitude
229-234 F6.4 mag e_Imag ?=9.99 rms uncertainty in Imag
242-245 F4.1 --- f_Imag ?=9.99 Unexplained Flag in Imag
251-256 F6.2 arcsec IFWHM ?=999.99 FWHM in I band
264-267 F4.2 --- Is/g ?=9.99 Stellarity parameter from I band (1)
272-278 F7.4 mag V-I V-I colour index
283 I1 --- Memb [0/1] Cluster membership
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Note (1): Stellarity index is 0 for extended object, 1 for point sources
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Global notes:
Note (G1):
Notice that the cluster names have slightly changed between
the published table4.dat (FSVS_CL) and the version from the
website (FSVSCL in file catalog.dat). The FSVSCL name of
table4 was added at CDS, ans is defined as the closest cluster
center in the file catalog.dat
Note (G2):
Cluster centre, defined as the mean position of its members.
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History:
From electronic version of the journal and copied at
http://www-astro.physics.ox.ac.uk/~iks/FSVScatalogue
(End) Patricia Vannier, Francois Ochsenbein [CDS] 19-Jan-2007