3 Description of the catalogue

The clusters studied in this paper are listed in Table 1. The column headings are:

Column 1: Abell catalog number.

Column 2: Number of galaxy in our catalogue used for the determination of the magnitude zero point.

Column 3:  Redshift (from Struble & Rood 1991).

Columns 4 and 5:  Right ascension and declination of the cluster centre (Abell et al. 1989).

Column 6:  Radius adopted for fixed aperture photometry, in arcsec.

Column 7:  The number of galaxies in the magnitude range m₃, m₃+3 within catalogued galaxy cluster.

The zero point of the magnitude was estimated using published photometric data.

For A147 we have used g magnitude of bright galaxy given by Hoessel et al. (1980) after the transformation F=g-1.76. The clusters A260, A272 and A278 lie in the same plate. In this case we have used the V magnitudes taken from Sandage & Perelmuter (1991) after the transformation F=V-1.71. For A2093, A2096, and A2124, lying in the same plate, we have used the g magnitudes given by Hoessel et al. (1980) after the transformation F=g-1.78.

Details of the photometry of A1661, which lies in the same plate of A1700, are presented in our previous paper (Trèvese et al. 1997). Photometry of A2056 and A2073, which are in the same plate of A2065, are presented in our previous paper (Trèvese et al. 1997).

Each catalogue contains all galaxies in the area shown in the identification maps, brighter than m₃+3.

Data for the individual galaxies in each cluster are given in Tables 2 to 11. The column headings for these tables are as follows:

Column 1: Identification number.

Column 2: X coordinate in arcseconds.

Column 3: Y coordinate in arcseconds.

Column 4: Right ascension 2000.

Column 5: Declination 2000.

Column 6: Size in arcsec, defined in Eq. (1) of Paper I.

Column 7: Ellipticity (1-b/a), where b/a is the ratio of minor/major axis lengths.

Column 8: Angle between the major axis and the positive ydirection, in degrees, increasing counterclockwise.

Column 9: Total F magnitude integrated in a circular area of radius R₁.

Column 10: F magnitude in a fixed circular aperture, whose radius in arcsec is indicated in Table 1.

Galaxies are sorted according to their total magnitude.

Acknowledgements

P.H. is supported by grants from the Natural Science and Engineering Research Council of Canada. P.F. and J.K. thank the Istituto Astronomico, Universita di Roma "La Sapienza'' for hospitality. This work has been partly supported by the Polish Committee for Scientific Research under the grant P304 006 05/93 and by the Italian MURST and CNR (G.N.A).