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Far-Ultraviolet Radiation from Elliptical Galaxies

O'Connell, Robert W.

Far-ultraviolet radiation is a ubiquitous, if unanticipated, phenomenon in elliptical galaxies and early-type spiral bulges. It is the most variable photometric feature associated with old stellar populations. Recent observational and theoretical evidence shows that it is produced mainly by low-mass, small-envelope, helium-burning stars in extreme…

Massive Star Populations in Nearby Galaxies

Conti, Peter S.; Maeder, André

Astrophysical contributions of the International Ultraviolet Explorer.

Kondo, Yoji; Maran, Stephen P.; Boggess, Albert

The International Ultraviolet Explorer (IUE) was launched on Janurary 26, 1978. The mission was conceived from the beginning as an ultraviolet spectroscopic observatory that could be used by astronomers as they were accustomed to observing from the ground, without special training in orbital operations. The authors describe some highlights of the …

Herbig-haro objects.

Schwartz, R. D.

Progress in the understanding of Herbig-Haro (HH) objects is reviewed. The results of optical studies of the proper motions and alignments, variability, and polarization of HH objects and the results of spectroscopic studies are discussed. Ground-based infrared studies and far-infrared observations are reviewed. Findings on the properties of molec…