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Astron. Astrophys. 364, 53-69 (2000) AcknowledgementsThis work was partially supported by the Italian Space Agency. GT thanks Prof. Trümper and the MPE staff for their hospitality and support while part of this work was done. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
© European Southern Observatory (ESO) 2000 Online publication: December 15, 2000 ![]() |