Fe II emission line profiles in spectra of high luminosity non-coronal stars

Details Fe II emission line profiles in spectra of high luminosity non-coronal stars Fe II emission line profiles in spectra of high luminosity non-coronal stars

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263...99c&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 99-102

Astronomy and Astrophysics

Astrophysics

4

Chromosphere, Cool Stars, Iron, Iue, Line Spectra, Stellar Luminosity, Stellar Spectra, Stellar Mass Ejection, Stellar Winds, Ultraviolet Spectra

Scientific paper

The results of a program to study the winds of noncoronal late-type giant and supergiant stars with IUE are presented. The primary data for this study are profiles, fluxes, and velocities of the Fe II emission lines which occur throughout the 2200 to 3230 A region of the IUE long wavelength spectrographs. The apparent dependence of the Fe II profiles on stellar luminosity (surface gravity) and intrinsic line strength is discussed. The discovery of significant changes in the Fe II profiles in spectra of Gamma Crucis (M3 III), during the period 1978 to 1985, that suggest a substantial change in its outer atmosphere is noted.

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