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Astron. Astrophys. 363, 306-310 (2000) AcknowledgementsWe would like to thank Dr. R. N. Smartt, the T.A.C. of NSO/SP and the staff of the Sacramento Peak Observatory, especially the Observers team of the DST, for their warm hospitality and their help with the observations. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 2000 Online publication: December 5, 2000 ![]() |