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The variable shell star HR 5999 : V. The spectral energy distribution.

Liseau, R.; Wamsteker, W.; The, P. S. +10 more

From April to August 1978 an international campaign was organized to observe the variable shell star HR 5999 with different techniques. A study of part of the collected material yields the following results. The visual light variation follows the general pattern as found at earlier observations ; the star stays usually long around maximum brightne…

UV and optical observations of X-ray sources in the Magellanic Clouds.

Tanzi, E. G.; Tarenghi, M.; Hammerschlag-Hensberge, G. +7 more

Ultraviolet spectra of the Magellanic Cloud X-ray sources LMC X-4, SMC X-1 and SMC X-2 obtained by the IUE satellite are presented together with simultaneous optical photometry of SMC X-1 and SMC X-2. Short- and long-wavelength IUE spectra for LMC X-4 taken near X-ray eclipse provide no evidence for P Cygni-type emission, despite evidence for mass…

The ultraviolet spectrum of UW Canis Majoris

Kondo, Y.; Drechsel, H.; Rahe, J. +1 more

High resolution spectra of the eclipsing binary UW CMa have been obtained in the wavelength range 950 to 3200 A with the Copernicus (OAO-3) and IUE satellites. UW CMa is an interacting system, consisting of an 07f Ia primary and an O-B secondary. The spectra have been used to compile a list of stellar and interstellar lines. Identifications togeth…