Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208..223s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 223-229.
Astronomy and Astrophysics
Astrophysics
14
Eclipsing Binary Stars, K Stars, M Stars, Stellar Winds, Supergiant Stars, Ultraviolet Spectra, Blue Stars, Chromosphere, Emission Spectra, Iue, Main Sequence Stars, Stellar Envelopes
Scientific paper
A set of 18 high resolution IUE spectra of chromospheric-eclipse phases of 22 Vulpeculae are analyzed by means of growth curves. A density model is presented and the upper limit of the electron density is determined. Si II UV mult. 2 wind resonance lines at several phases are modeled with a two-dimensional transfer code. It is found that although 22 Vul resembles the classical Zeta Aurigal primaries in many respects, its Fe II wind lines have peculiar profiles indicative of ionization/excitation inhomogeneity. The differences between 22 Vul and HR 6902 are examined.
Reimers Dieter
Schroeder Klaus-Peter
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