Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....85..233f&link_type=abstract
Astronomy and Astrophysics, vol. 85, no. 1-2, May 1980, p. 233-243.
Astronomy and Astrophysics
Astrophysics
14
Emission Spectra, Giant Stars, Iron, Line Spectra, Magellanic Clouds, Stellar Spectra, Balmer Series, Boltzmann Distribution, Stellar Mass Ejection, Stellar Winds
Scientific paper
The Balmer and singly ionized iron lines of this peculiar emission line supergiant have been analyzed. The study of the former lines showed that this star appears to be losing mass at between 4 x 10 to the -6th and 5 x 10 to the -5th solar masses/yr if most of the hydrogen of the stellar wind is assumed to be ionized. The optically thick wind in the Balmer continuum may also be so for electron scattering, and may be responsible for almost all the continuous emission seen from the star. The relative populations of the terms of singly ionized iron were found. Both the optically very thick permitted and the forbidden lines appear to be formed in the same or nearly the same region, whose nature is discussed. The radius of a disk perpendicular to the line of sight, with the same surface area in this plane as this region, is not more than 3 x 10 to the 14th cm, and probably greater than 3 x 10 to the 13th cm.
Friedjung Michael
Muratorio Gérard
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