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Astron. Astrophys. 326, 218-220 (1997) AcknowledgementsWe thank the staff members of the Calar Alto Observatory for their assistance during the observation and the Deutsche Forschungsgemeinschaft for financial support. S.F. acknowledges a post doctoral grant from the Deutsche Forschungsgemeinschaft. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1997 Online publication: April 20, 1998 ![]() |