We thank Saul Adelman for making his spectrum of HD 161817 available to us and also Giuseppe Bono and Santino Cassisi for providing their ZAHB models before publication. We also thank Allen Sweigart for sending us his He-enhanced models in electronic form. We are grateful to John Glaspey for helpful comments on a provisional draft of this paper and the referee (Klaas de Boer) for questioning the validity of models for representing far-UV spectra of BHB stars and for many suggestions for improving the style and readability of the paper. We are pleased to acknowledge the use of the IUE Final Archive which is sponsored and operated by NASA/ESA. This research has made use of the Simbad database, operated at CDS, Strasbourg, France.
© European Southern Observatory (ESO) 2000
Online publication: December 15, 2000