IUE ultraviolet spectroscopy of stars in the Magellanic Clouds.

Abstract

Low dispersion IUE spectra of seven hot supergiants in the Large Magellanic Cloud and one in the Small Magellanic Cloud are presented. Stellar winds are present in all the stars, but the resonance lines have weak or no emission and probably have lower terminal velocities than galactic counterparts. Spectral energy distributions are used to derive effective temperature, luminosities, and interstellar extinction values. These are in reasonable agreement with ground-based estimates. Some peculiarities are noted and compared with galactic stars. Line features in the spectra are discussed, including several unusual emission lines. The peculiar star R99 appears to be very luminous (bolometric magnitude of about -11.4) and reddened.