Access to Astronomical Catalogues

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