BETA-CEPHEI TYPE VARIABILITY IN THE ULTRAVIOLET-SPECTRUM AND RADIAL-VELOCITY OF PHL-346

International Ultraviolet Explorer low-resolution and optical moderate -resolution spectra are presented for the high galactic latitude beta Cephei type star, PHL 346, Variability is identified in both the ultra violet flux and the radial velocity with periods and phases consistent with those previously deduced from optical photometry. The similarity of both the flux and the radial velocity amplitude to those previousl y reported for the beta Cephei variable, gamma Pegasus, is striking an d provides evidence for PHL 346 being a young core hydrogen burning st ar. A distance estimate for PHL 346 of approximately 7 kpc (correspond ing to a z-distance of approximately 6 kpc) is obtained by scaling the distance of gamma Pegasus obtained from Hipparcos observations.