Physics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..297d&link_type=abstract
In ESA Fourth European IUE Conf. p 297-300 (SEE N84-35135 24-88)
Physics
3
B Stars, Deceleration, Parameter Identification, Stellar Models, Stellar Temperature, Variable Stars, Balmer Series, Chromosphere, Far Ultraviolet Radiation, Stellar Coronas, Stellar Rotation, Stellar Spectra
Scientific paper
Physical parameters whose size and behavior may identify a Be star independently of the presence (or non-presence) of H alpha emission are discussed. A decelerated model for Be and similar stars and an assertion that mass outflow variability is a sufficiant condition to produce the necessary deceleration are discussed. The far UV spectral changes in the CIV and A1III resonance lines of the Be star, theta CrB, during its normal B phase, 1980 to 1984 are summarized It is suggested that the observed changes in ionization reflect changes in the nonradiative heating of the chromosphere-corona, and that such variable heating, together with variable mass-loss, are Be-star characteristics.
Doazan Vera
Thomas Nicholas R.
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