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Astron. Astrophys. 359, 635-638 (2000) AcknowledgementsThis research has made use of the Simbad database, operated at CDS, Strasbourg, France. The authors acknowledge use of the CCD and data acquisition system supported under U.S. National Science Foundation grant AST-90-15827 to R.M. Rich. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 2000 Online publication: July 7, 2000 ![]() |