2 The sample

 The early-type galaxies studied in this article are a subsample of the galaxies studied in Paper I, for which we have very reliable V and R images. They are luminous galaxies ($B_{\rm T}<13$ mag) with morphological type E and S0 taken from "The Third Reference Catalog of Bright Galaxies" (RC3; de Vaucouleurs et al. 1991) and the "Revised Shapley-Ames Catalog" (RSA; Sandage & Tammann 1987). The galaxies, their morphological types, magnitudes, coordinates and distances are listed in Table 1. The distances have been derived with the "220 model" for the Virgo Infall of Kraan-Korteweg (1986) assuming that Virgo Cluster is at a distance of 21.3 Mpc, which implies a Hubble constant $H_{0}=55\,{\rm km\, s^{-1}\,Mpc}^{-1}$. For galaxies not present in the Kraan-Korteweg's list, distances were derived from their redshift corrected to the reference frame defined by the cosmic microwave radiation (from RC3).

  

Table 1: Identification, coordinates, morphological type and distance from RSA catalog and the blue apparent magnitude $B\rm _T^0$, corrected for Galactic absorption and redshift, for the galaxies in the sample