The Ultraviolet Spectral Morphology of a Sample of B Supergiants in the Small Magellanic Cloud
Session 22 -- Stellar Spectroscopy, Atmospheres, Models, Intrinsic Variables, Theory, Part II
Display presentation, Tuesday, June 13, 1995, 9:20am - 6:30pm

## [22.16] The Ultraviolet Spectral Morphology of a Sample of B Supergiants in the Small Magellanic Cloud

R. C. McNeil, A. L. Borchers (N. Kentucky Univ.), G. Sonneborn, R. P. Fahey (NASA/GSFC)

A study of the ultraviolet spectra of a sample of B supergiants in the Small Magellanic Cloud is being undertaken as a means of addressing some questions about the nature and evolution of massive stars. All spectra are new or archival low-dispersion SWP spectra ($1200<\lambda<2000$\AA) obtained with the International Ultraviolet Explorer.

As a first step in this study, the ultraviolet spectral morphology of approximately 50 program stars is being examined for consistency with their published spectral classifications. Analysis includes a tabulation of ultraviolet spectral features, evaluation of their variation with spectral type and luminosity class, and comparison with IUE spectral sequences of standard stars. The data analysis was performed at the IUE Data Analysis Center at Goddard Space Flight Center.

Partial support of this work by NASA and Northern Kentucky University through the Joint Ventures (JOVE) program, and support of the Laboratory for Astronomy and Solar Physics at GSFC, is gratefully acknowledged.