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Simultaneous X-ray, UV, and optical observations of the recent nova HR Del.

Hutchings, J. B.

HR Del was observed simultaneously with the IUE satellite (low-dispersion spectroscopy), the DAO 1.8-m telescope (medium-dispersion spectroscopy), and the Einstein observatory (X-ray imaging proportional counter) over part or all of one 4-hour orbital cycle. The orbital ephemeris is refined and accurate phases computed for the data. The UV spectra…

The extinction of HD 200775 by dust in NGC 7023.

Witt, A. N.; Yang, S.; Walker, G. A. H. +1 more

The extinction properties of the Be shell star HD 200775 caused by dust in the bright reflection nebula NGC 7023 are discussed on the basis of direct observations of HD 200775. Reddening curves obtained between 5500 and 6800 A by a Reticon linear array are found to differ from any simple curve, lacking diffuse interstellar features except at 6284 …

IUE observations of the ultraviolet spectrum of the close binary del Pic.

Feibelman, W. A.; Kondo, Y.; McCluskey, G. E.

The eclipsing binary δ Pic has been observed with the International Ultraviolet Explorer (IUE) satellite. Two high-resolution spectrograms in the far-ultraviolet (NA1 150-1900) and one high-resolution spectrogram in the mid-ultraviolet of (λλ1900-3200) were obtained. The far-ultraviolet resonance lines of C III (λ1175) and Si IV (λλ1393 and 1402) …

Erratum - IUE Spectra of the Massive Close Binary V382 Cygni

Koch, R. H.; Siah, M. J.; Fanelli, M. N.