J/other/JAD/12.1 Catalog of galaxy structures based on the MRSS (Panko+, 2006)
A catalogue of galaxy clusters and groups based on the Muenster Red Sky Survey.
Panko E., Flin P.
<J. Astron. Data, 12, 1-9 (2006)>
=2006JAD....12....1P 2006JAD....12....1P
ADC_Keywords: Clusters, galaxy ; Magnitudes ; Morphology
Keywords: galaxy clusters - catalogues
Abstract:
We present a catalogue of galaxy structures (groups and clusters)
found in an area of 5000 square degrees in the southern hemisphere.
The catalogue, which we call the PF Catalogue, was created by making
use of galaxy positions and magnitudes given in the Muenster Red Sky
Survey (MRSS, 2003JAD.....9....1U 2003JAD.....9....1U). We applied an automated procedure
for structure finding, involving the Voronoi tessellation. The
completeness limit for galaxies in the MRSS is rF=18.3m. Therefore,
the present version of the PF Catalogue is based on galaxies brighter
than this limit. In order to be included in the PF Catalogue, a
structure must have at least 10 members in a magnitude range m3,
m3+3m. We found 6188 structures which are listed in the present
catalogue. The PF Catalogue contains positions, radii, areas, number
of galaxies within the magnitude limit m3, m3+3m, a number
estimation of background galaxies; ellipticity and position angle for
each structure, as well as the magnitudes of the first, the third and
the tenth galaxies in a structure, taken from the MRSS.
Description:
We selected the Voronoi tessellation technique (Voronoi, G. 1908, J.
Reine Angew. Math. 134, 198) for cluster detection.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
pfcat.dat 126 6188 The PF Catalogue (version PFcat18, see erratum.pdf)
erratum.pdf 148 89 Text of the erratum
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See also:
B/eso : ESO Science Archive Catalog (ESO, 2012)
J/ApJ/723/985 : Orientation of galaxies in galaxy clusters (Godlowski+, 2010)
Byte-by-byte Description of file (2 headlines): pfcat.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- PF Structure identification (HHhh-DDdd)
11- 20 F10.7 h RAhour Right Ascension in decimal hours (J2000)
22- 31 F10.6 deg DEdeg Right Ascension in decimal degrees (J2000)
33- 36 I4 arcsec Rad Equivalent radius for full area of structure
38- 45 I8 arcsec2 S The area of structure in square arcseconds
47- 49 I3 --- N Number of all galaxies in the field of structure
51- 53 I3 --- Nm Number of galaxies in the field of structure
within the magnitude limits [m3, m3+3]
55- 57 I3 --- Nbg Estimated number of background galaxies
63- 66 I4 arcsec amaj Major semiaxis of the fitted ellipse
68- 71 I4 arcsec bmin Minor semiaxis of the fitted ellipse
73- 76 F4.2 --- Ell Ellipticity of the structure
79- 83 F5.1 deg PA Position angle of major axis of structure (1)
88- 92 F5.2 mag m1 MRSS magnitude of the brightest galaxy
94- 98 F5.2 mag m3 The third-brightest galaxy as given in MRSS
100-104 F5.2 mag m10 The tenth-brightest galaxy as given in MRSS
111-115 F5.1 deg PA1 The position angle of the brightest galaxy major
axis (from MRSS)
117-120 F4.2 --- Ellm Average mean ellipticity for galaxies
(calculated from MRSS data)
122-126 F5.1 deg PAm Mean position angle of galaxies in structure
(calculated from MRSS data)
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Note (1): The angle is counted clockwise from direction to the North Pole,
same as the PA for galaxies in the MRSS (Muenster Red Sky Survey)
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History:
* 13-Aug-2012: From http://www.vub.ac.be/STER/JAD/JAD12/jad12_1/jad12_1.htm
* 29-Jul-2013: Erratum communicated by the author (Elena Panko), with a
new version of the catalog (PFcat18), with fixed values of the mean
position angle (PAm).
(End) Emmanuelle Perret, Francois Ochsenbein [CDS] 28-Jul-2013