3. Description of the catalog

The clusters studied in this paper are listed in Table 1 (click here). The column headings are:

:   Abell catalog number.

:   Identification number of the galaxy used to set the zero of the magnitude scale.

:   Redshift (from Struble & Rood 1991).

:   Right ascension of the galaxy in the reference paper.

:   Declination of the galaxy in the reference paper.

:   Radius adopted for fixed aperture photometry, in arcsec.

The zero of the magnitude scale has been established using published photometric data. The reference papers are listed below.

For A76, and A2657 we have used r magnitudes of bright galaxies given by Hoessel et al. (1980), and compared our photometry in the same aperture after the transformation F=r-0.58, valid for bright elliptical galaxies, for which we assume B-V=0.97 (Schneider et al. 1983) (SGH). For A157 we used the zero of A151, which lies in the same plate (see Paper II). For the clusters A671, A779, A2028, A2040, A2052, A2063, A2065, and A2670 we have used the r magnitudes of the brightest member taken from Hoessel & Schneider (1985) after the transformation F=r-0.58, from SGH.

For A1700 (which lies in the same plate of A1661) and A2593 we have used the V magnitudes of Bothun et al. (1985), Murphy et al. (1983) respectively, after the transformation F=V-0.76, from SGH. For A407 and A505 we used the V magnitudes of Peterson (1970) after the transformation F=V-0.76. The error on the zero of the the magnitude scale can be deduced from the above references.

Each catalog contains all the 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 3 to 17. The column headings for these tables are as follows:

: Identification number.

: Right ascension 2000.

: Declination 2000.

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

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

: angle between the major axis and to the positive y direction, in degrees, increasing counterclockwise.

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

: F magnitude in a fixed circular aperture, whose radius in arcsec is indicated in Table 1 (click here).

Galaxies are sorted according to their total magnitude.

Fore each cluster we give, in Figs. 1 (click here) to 15 (click here), identification maps with the serial numbers of the first 50 objects and isodensity plots obtained from the density images.

Table 2 (click here) contains the data of 2 bright galaxies of A1213, missing in T92, in the same format of Tables 2 (click here)-16.

Tables 18-25 contain the and (2000) coordinates of the galaxies belonging to the clusters A195, A465, A1185, A1213, A1413, A1775, A2319, A2597, which were presented in T92 using relative coordinates.

  

11 16 27.1 +29 14 33 16 0.29 69 13.8 14.8

11 16 22.0 +29 13 04 16 0.44 143 13.8 14.0

Acknowledgements

P.H. is supported by grants from the Natural Science and Engineering Research Council of Canada. P.F. thanks the Istituto Astronomico, Università 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.).

Fig. 1 to 15. For each cluster field: a) identification maps with labels indicating the 50 brightest galaxies; b) isodensity maps, with the thick line indicating the average density of the field. The orientation is N at top, E at left. Big ticks are spaced by 15 arcmin. For each cluster the scale is the same in Figs. a) and b)

  
Figure 1

  
Figure 2

  
Figure 3

  
Figure 4

  
Figure 5

  
Figure 6

  
Figure 7

  
Figure 8

  
Figure 9

  
Figure 10

  
Figure 11

  
Figure 12

  
Figure 13

  
Figure 14

  
Figure 15

  
Figure 16: Isodensity map of Abell 407 computed with the algorithm used in Trèvese et al. (1992), to be compared with 3 (click here)b