A Comparison of Star Formation Characteristics in Different Types of Irregular Galaxies

Computer Science

Scientific paper

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Scientific paper

This proposal is directed toward further understanding the star formation processes in 'hot' galaxies through a comparison of IUE spectrophotometry of very high star formation rate irregular galaxies with that of regular Irr galaxies and of dwarf irregulars. These systems provide a good setting in which to explore such current concerns as the constancy of the initial mass function for massive OB stars and the possible role of "supermassive" stars. These observations will also yield much needed empirical data on the actual spectral characteristics of galaxies in star burst states. We propose to make both LWR and SWP observations of our target galaxies as part of a larger observing program involving both optical and infrared observations. The large wavelength coverage will enable us to investigate the hot stellar component of these galaxies, to compare our results with theoretical evolutionary models of galaxies, and to obtain data on expected characteristics of hot galaxies viewed at large redshifts.

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