Ultraviolet Imaging Telescope Observations of OB Stars in the N 11 Region of the LMC

Abstract

We present an analysis of far-ultraviolet (FUV: 130-180 nm) and optical (U, B, and V) data of the stellar and nebular content of the OB associations LH 9, 10, and 13 in the Large Magellanic Cloud region N 11. The FUV images from The Ultraviolet Imaging Telescope strongly select the hot O and B stars; over 1900 stars were detected in the FUV to a limiting magnitude of m(FUV) = 17 mag. The resulting FUV photometry combined with optical ground-based data indicate there are approximately 88 confirmed or candidate O stars in the LH 9, 10, and 13 fields alone (in an area of ~ 41 arcmin${}^2$), and possibly as many as 170 to 240 O-type stars within the entire 40~arcmin-diameter field of view.

AAS LaTeX style, 6 pages, 5 figures (Fig 1 as a GIF file, Figs 2-5 as encapsulated PostScript for embedding in the LaTeX file). Complete gzipped PostScript paper (including Figure 1) can be obtained from: http://k2.space.swri.edu/papers/papers.html In press in The Astrophysical Journal Letters

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