The expanding atmosphere of HD 218393

Details The expanding atmosphere of HD 218393 The expanding atmosphere of HD 218393

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982iaus...98..393p&link_type=abstract

In: Be stars; Proceedings of the Symposium, Munich, West Germany, April 6-10, 1981. (A83-10301 01-90) Dordrecht, D. Reidel Publi

Physics

1

B Stars, Binary Stars, Stellar Atmospheres, Stellar Mass Ejection, Ultraviolet Spectra, Visible Spectrum, Absorption Spectra, Abundance, Far Ultraviolet Radiation, High Resolution, Iue, Resonance Lines, Silicon, Spectral Line Width, Spectral Resolution

Scientific paper

Visible and far-UV high resolution spectra of the B2 binary star HD 218393 have been obtained at one day intervals, shortly before the phase of maximum outwards velocity, adopting the period of 38.908 days. Both spectra show the existence of an extended atmosphere, accelerated outwards. The Si IV resonance lines show some indication of mass loss. With only one set of observations, the origin of the strong and wide UV absorption lines of once ionized elements is difficult to determine.

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