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Astron. Astrophys. 332, 681-685 (1998) AcknowledgementsObservational data were obtained at The Isaac Newton Telescope and The William Herschel Telescope on the island of La Palma operated by the Royal Greenwich Observatory. We are grateful to the staff for their assistance at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. Data reduction was performed on the PPARC funded Northern Ireland STARLINK node, and some of the model atmosphere programs were made available through the PPARC supported Collaborative Computational Project No. 7. REH would like to thank PPARC for funding ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1998 Online publication: March 23, 1998 ![]() |