Ultraviolet Imaging Telescope Observations of OB Stars in the N 11 Region of the Large Magellanic Cloud

We present an analysis of far-ultraviolet (FUV; 1300-1800 Å) 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 m152 = 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 arcmin2) and possibly as many as 170-240 O-type stars within the entire 40' diameter field of view.