VII/87A Data on 1889 Abell's clusters of galaxies (Leir+ 1977)
Data on 1889 Abell's rich clusters of galaxies
Leir A.A., van den Bergh S.
<Astrophys. J. Suppl. Ser. 34, 381 (1977)>
=1977ApJS...34..381L 1977ApJS...34..381L
ADC_Keywords: Clusters, galaxy ; Galaxy catalogs
Description:
A sample of 1889 clusters from Abell's catalogue of Rich Clusters
of Galaxies (1958, ApJS 3, 211) have been classified in the
Bautz-Morgan system
See also:
VII/110 : 1989 version of Abell's Catalogue
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 28 1889 Table 1 of the paper, cols 1,6,7,9-11
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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- 4 I4 --- Abell Abell cluster number
6- 8 F3.1 --- BMclass [1/3] Bautz-Morgan class (1)
9 A1 --- u_BMclass Uncertainty symbol (:) on BMclass
11- 12 I2 mm Radius Apparent cluster radius on the red plate
of the Palomar Sky Survey (2)
15- 18 F4.2 mm Gmaj Apparent major axis of the brightest
cluster member (2)
20- 23 F4.2 mm Gmin Apparent minor axis of the brightest
cluster member (2)
25- 28 F4.1 mag rmag Photo-red magnitude of the brightest
cluster member corrected for absorption.
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Note (1): The classification is written with arabic number, with
1.5 = I-II and 2.5 = II-III.
The classification is defined in Bautz L.P., Morgan W.W.,
1970ApJ...162L.149B 1970ApJ...162L.149B :
Class I = clusters containing a centrally located cD galaxy
II = clusters where brightest galaxy or galaxies are
intermediate in appearance between class cD and the
Virgo-type giant ellipticals
III = clusters containing no dominant galaxies.
Note (2): 1 mm = 67.14"
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Historical Notes:
* March 1990: the BMclasses I-II and III were all coded as '3' (note
from H. Andernach). The corrections have been made at NSSDC/ADC
(version VII/87A)
* 21-Jul-1995: Standard description added at CDS
* 02-Aug-2007: another 3 errors in MinAxis/MajAxis values communicated
by H. Andernach.
(End) Francois Ochsenbein [CDS] 21-Jul-1995