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Chromospheric density distribution, opacity, ionization and windacceleration of 3 K supergiants in ζ aurigae systems

Published online by Cambridge University Press:  04 August 2017

Klaus-Peter Schröder*
Affiliation:
Hamburger Sternwarte, Universität Hamburg Gojenbergsweg 112 D-2050 Hamburg 80 Federal Republic of Germany

Extract

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Results from 58 chromospheric eclipse spectra of three ζ Aurigae type binary systems - with a K supergiant primary and a B star companion -taken with IUE at high resolution are presented. Curves of growth have been constructed at 20 phases using selected chromospheric absorption lines superposed upon the B star spectrum. In order to fit average density models to the chromospheres, 3 samples of column densities (for ζ Aur., 32 Cyg. (fig.1) and 31 Cyg. K giants) have been used.

Type
Mass-Loss From Cool Stars
Copyright
Copyright © Reidel 1987