We thank the referee (R. Corradi) for his useful comments and suggestions for improving the paper. We also thank P. Alton for his contribution in the calculation of the dust mass. One of us (E.M.X.) would like to thank T. Pierratos for useful discussions concerning analytical calculations for the bulge functions. This research has been supported in part by a Greek-British Joint Research Program and by a P.EN.E.D. Program of the General Secretariat of Research and Technology of Greece. Skinakas Observatory is a collaborative project of the University of Crete, the Foundation for Research and Technology-Hellas and the Max-Planck-Institut für Extraterrestrische Physik.
© European Southern Observatory (ESO) 1997
Online publication: May 5, 1998