IUE Observations of the Ultraviolet Spectrum of the Close Binary Delta-Pictoris

Details IUE Observations of the Ultraviolet Spectrum of the Close Binary Delta-Pictoris IUE Observations of the Ultraviolet Spectrum of the Close Binary Delta-Pictoris

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..688k&link_type=abstract

Publications of the Astronomical Society of the Pacific, Vol. 92, P. 688, 1980

Astronomy and Astrophysics

Astronomy

2

Scientific paper

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) show the presence of excess absorption due to gas leaving the primary star with velocities as high as 600-700 km s-1, Many of the interstellar lines are doubled with the two components having mean velocities of -40.6 and +9.0 km s-1. It is suggested that the negative velocity component may be due to an expanding circumstellar shell surrounding the binary system.

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