Involved people at OAB: Cappi.
Cappi, in collaboration with C.Benoist, L.N. da Costa (ESO), and
S. Maurogordato (Obs. de la Côte d'Azure), has analyzed
the statistical properties of the galaxy distribution as a function of galaxy
luminosity, using the SSRS2 catalogue (da Costa et al.1994).
This analysis has shown that galaxies with 
have an increasingly
larger correlation length, approaching that of clusters. However the relative
bias in the galaxy distribution is not linear, as clearly shown by Benoist et
al. (1999).
Moreover, very luminous galaxies approach the cluster correlation length, but
they do not seem to reside preferentially in clusters, and their morphological
distribution is comparable to the field. A number of these galaxies shows
also clear signs of interaction (Cappi et al. 1998).
Cappi is studying the dynamics of these systems with observations performed
mainly at the OHP 1,93m telescope. Some of these VLGs might be the brightest
members of systems similar to the Local Group. He is planning more extensive
observations of these systems.