The bright Magellanic irregular galaxy NGC 4449 was observed by the Ultraviolet Imaging Telescope (UIT) during the Astro-2 Spacelab mission in March, 1995. Far ultraviolet (FUV) images at a spatial resolution of ~3 arcsec show bright star-forming knots that are consistent with the general optical morphology of the galaxy and are often coincident with bright H II regions. Comparison of FUV with H-alpha shows that in a few regions, sequential star formation may have occurred over the last few Myr. The bright star forming complexes in NGC 4449 are superposed on a smooth, diffuse FUV background that may be associated with the H-alpha "froth."
@article{arxiv.astro-ph/9612168,
title = {UIT Astro-2 Observations of NGC 4449},
author = {Robert S. Hill and Michael N. Fanelli and Denise A. Smith and Theodore P. Stecher and the UIT Team},
journal= {arXiv preprint arXiv:astro-ph/9612168},
year = {2009}
}
Comments
4 pages, Latex with AIP proceedings macros, 2 EPS figures. To appear in proceedings of U. Maryland October Astrophysics Conf., 1996, AIP pub