Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988rmxaa..16...75k&link_type=abstract
Revista Mexicana de Astronomia y Astrofisica, Vol. 16, No. 2, p. 75 - 80
Astronomy and Astrophysics
Astronomy
17
Binaries:Wolf-Rayet Stars, Stellar Winds:Wolf-Rayet Stars, Wolf-Rayet Stars:Binaries, Wolf-Rayet Stars:Iron Lines, Wolf-Rayet Stars:Spectral Variations, Wolf-Rayet Stars:Stellar Winds
Scientific paper
An attempt is made to synthesize the Fe V and Fe VI line spectra, using the data of Ekberg (1975) for these ions. It is shown that the lines of these ions, when broadened to typical velocities in WR winds, produce pseudo-continua in the wavelength regions λλ1350 - 1470 A and λλ1240 - 1350 Å, respectively. A linear combination of Fe V and Fe VI lines results in a pseudo-continuum in the λλ1250 - 1470 Å region. This coincides with the wavelength region affected by atmospheric eclipses in Wolf-Rayet WNE (i.e., WN4 - WN6) binary systems observed with the IUE. The synthesized spectrum reproduces the variations observed in low dispersion IUE spectra of five galactic WN+O binary systems remarkably well.
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