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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 28 1889 Table 1 of the paper, cols 1,6,7,9-11
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
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.
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 : 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"
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
|The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line|