UV and visible photometry of the brightest Pleiades stars.

Abstract

This paper describes 7-color photometric observations of the brightest stars in the Pleiades taken over the last 20 years. These data are analyzed in conjunction with UV photometric and spectroscopic observations made with the OAO-II, IUE satellites and a balloon-borne photometer. Accurate determinations of the interstellar extinction are obtained and the age of the brightest Pleiades stars is given. The behavior of the energy distribution between 2000 and 6500 A is discussed for the case of three Be stars, among them Pleione.