FOS Spectra of OB-type Stars in the LMC
Abstract
As part of continuing project to determine the intrinsic stellar parameters (temperature, gravity, luminosity, chemical composition, radius, mass-loss rate) of early OB-type stars, we are observing several stars in the Large and Small Magellanic Clouds using the HST/FOS high resolution gratings (G130H, G190H) in the UV (1200 to 2200 Angstroms). This part of the UV spectrum contains several line profiles of C, N, O, and Si which when combined with ground based observations in the optical and NLTE stellar atmosphere models allow us to accurately determine the intrinsic stellar parameters of the star. In this poster, we will present the FOS spectra and preliminary model fits for AV-232 (Sk-80) and AV-488 (Sk-159) which are to be obtained Fall 1992. We will also present our latest work on the three stars (Sk-70D69, Sk-66D100, and Sk-68D137) obtained last summer.
- Publication:
-
American Astronomical Society Meeting Abstracts
- Pub Date:
- December 1992
- Bibcode:
- 1992AAS...181.1908V