J/ApJ/306/30 Catalog of distant galaxy clusters (Gunn+, 1986)
A systematic survey for distant galaxy clusters.
Gunn J.E., Hoessel J.G., Oke J.B.
<Astrophys. J. 306, 30 (1986)>
=1986ApJ...306...30G 1986ApJ...306...30G
ADC_Keywords: Clusters, galaxy ; Positional data
Keywords: cosmology - galaxies : clustering - galaxies : photometry
Abstract:
A photographic survey for faint galaxies has been carried out with
fine-grained photographic emulsions using the 1.2m Schmidt and 5m Hale
telescopes, as well as the 4m Mayall telescope. A total of 418
clusters have been found with redshifts mostly in the range from
0.15 to 0.92. The survey was planned to minimize distance-dependent
selection effects in the resulting catalog. In areas of sky where the
deepest search was made, the sample is complete to about z=0.50; there
are 11 clusters per square degree at this limit. At a redshift of 1.0
there should be 63 or 45 clusters per square degree depending on
whether q0 is 0.0 or 0.5, provided there is no evolution.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 21 418 Catalog of distant clusters
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See also:
VII/4 : Abell and Zwicky Clusters of Galaxies (Abell+ 1974)
VII/165 : Catalog of measured redshifts of Abell clusters of galaxies
(Andernach, 1991)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (B1950)
4- 5 I2 min RAm Right ascension (B1950)
7- 8 I2 s RAs Right ascension (B1950)
10 A1 --- DE- Declination sign (B1950)
11- 12 I2 deg DEd Declination (B1950)
14- 15 I2 arcmin DEm Declination (B1950)
17- 18 I2 arcsec DEs Declination (B1950)
20- 21 A2 --- Obs Observation type (1)
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Note (1): Type of observation as follows:
HF = Cluster found in the Hale telescope survey
MF = Cluster photographied at the prime focus on the Mayall 4m telescope
MN = Cluster photographied at the prime focus on the Mayall 4m telescope
using silver nitrate-hypersensitized IV-N plates and an RG 695 filter.
SF = Cluster found in Schmidt IIIa-F plate
SJ = Cluster found in Schmidt IIIa-J plate
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Nomenclature Notes:
The clusters are identified as GHO HHMMSS+DDMMSS in Simbad
History:
Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 31-Dec-2002