Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218....3s&link_type=abstract
In ESA Fourth European IUE Conf. p 3-9 (SEE N84-35135 24-88)
Astronomy and Astrophysics
Astronomy
4
Elliptical Galaxies, Spaceborne Astronomy, Spiral Galaxies, Stellar Evolution, Ultraviolet Astronomy, Astronomical Netherlands Satellite, B Stars, Interstellar Extinction, Iue, O Stars, Oao
Scientific paper
Ultraviolet observations of normal galaxies are reviewed with respect to the knowledge of their stellar populations. UV data show that both elliptical galaxies and the bulges of spiral galaxies posses a hot star component of uncertain nature. The importance of a better understanding of the late stages of stellar evolution, both from an observational and a theoretical point, is stressed. In those spiral and elliptical galaxies undergoing a star-burst it is clear that young O- and B-type stars are responsible for the ultraviolet flux. Some recent results for these objects are briefly considered.
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