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A comparison of the MG resonance lines in AM and non AM stars of similar temperatures.
Boehm-Vitense, E.
A comparison of the Mg II resonance lines in Am and none Am stars of similar effective temperatures does not show any measurable differences. The Mg I resonance lines may be weaker in the Am stars. The mechanism reducing the Ca II K line intensities in Am stars does not work for the Mg II k and h lines.
IUE observations of two late type stars : R AQL and W Hya.
Kafatos, M.; Michalitsianos, A. G.; Hobbs, R. W.
Ultraviolet spectra of two late type M stars R Aql and W Hya were obtained with the International Ultraviolet Explorer (IUE). Spectra were obtained of R Aql near maximum (φ=0.21) and minimum φ=0.65) of the visible light curve. We find that the absolute flux intensity of the Mg II resonance doublet (2796 Å, 2803 Å) is essentially the same at these …
Analysis of the far-ultraviolet silicon lines in G dwarf stars
Rego, M.; Fernandez-Figueroa, M. J.; Cornide, M.
The structure of the outer stellar regions is investigated for four G type dwarfs observed with the IUE satellite. Line fluxes of the Si II lines at 1817 A, 1808 A, and 1309 A and Si III at 1206 A are used to obtain temperatures and electronic densities. A temperature of 16,000 K is found from the lines at 1817 A and 1808 A, 26,000 K from the 1309…