IUE spectra of the hot close binary V Puppis

Details IUE spectra of the hot close binary V Puppis IUE spectra of the hot close binary V Puppis

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..621k&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, Oct.-Nov. 1981, p. 621-625.

Astronomy and Astrophysics

Astronomy

5

B Stars, Eclipsing Binary Stars, Interstellar Extinction, Iue, Stellar Spectra, Ultraviolet Spectra, Abundance, High Dispersion Spectrographs, Line Spectra, Spectral Line Width, Stellar Envelopes, Stellar Gravitation, Stellar Rotation, Stellar Temperature

Scientific paper

Low- and high-dispersion ultraviolet spectra obtained by the IUE of the early B-type close binary V Puppis are reported. The continuum derived from the low-dispersion images is consistent with a solar abundance model of effective temperature 25,000 K and log surface gravity 4.0. The high-dispersion spectra show shallow double lines, representing Doppler-resolved stellar lines, which are broadened as expected for the fast rotational velocities given by Levato (1974). The equivalent widths of the silicon lines, however, do not agree with the temperature derived for the star, while the silicon and carbon absorptions indicate a disordered photosphere in the presence of circumstellar gas. Several interstellar lines are also observed for the first time.

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