Physics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..309m&link_type=abstract
In ESA Fourth European IUE Conf. p 309-313 (SEE N84-35135 24-88)
Physics
2
Iron, Stars, Stellar Spectra, Ultraviolet Spectra, Visible Spectrum, Absorption Spectra, Cygnus Constellation, Seyfert Galaxies, Stellar Winds
Scientific paper
Analysis of data concerning the fluxes of FeII lines in the optical and the UV for luminous P Cyg stars, symbiotic objects, and Seyfert galaxies is discussed. When fluxes of individual lines are available, semi-empirical methods of deriving information, taking account of self absorption, are most appropriate, and can be interpreted if, for instance, the lines are thought to be formed in a stellar wind. When low resolution data only are available in the UV, methods of spectral synthesis are necessary. Work taking account of emission and absorption lines is described.
Friedjung Michael
Muratorio Gérard
Viotti Roberto
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