Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.211..171g&link_type=abstract
Astrophysics and Space Science, vol. 211, no. 2, p. 171-177
Astronomy and Astrophysics
Astrophysics
2
Ions, Magnesium, Radio Emission, Radio Stars, Ultraviolet Emission, Flux Density, Luminosity, Magnitude
Scientific paper
Spectral recordings in the region near 2800 A are examined from the International Ultraviolet Explorer (IUE) archives for the twenty most active radio stars, which are also close binary systems. In all of these spectra, the doublet k and h Mg 11 is seen in strong emission. We find that the observed fluxes of the magnesium doublet emission are directly proportional to the mean fluxes of the observed radio emission at the frequency of 8.4 GHz. The same correlation is found between the absolute luminosities of the radio emission and magnesium doublet emissions. It is argued that the source of both emissions, radio and magnesium doublet, is related to a high temperature stratified cloud located between the components of the binary system. The fluxes of the magnesium doublet emission of these sources are much larger by one or two orders of magnitude, compared with the usual chromospheric magnesium emission seen in single stars.
Gurzadyan Grigor A.
Rustambekyan S. S.
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