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Astron. Astrophys. 363, 970-983 (2000) AcknowledgementsFinancial support from the "GdR Galaxies" and the "Programme National de Physique Stellaire" is acknowledged. We also acknowledge the comments from an anonymous referee. MC is supported by an ESA fellowship.
© European Southern Observatory (ESO) 2000 Online publication: December 5, 2000 ![]() |