An interpretation of the spectral variations of Theta Coronae Borealis

Details An interpretation of the spectral variations of Theta Coronae Borealis An interpretation of the spectral variations of Theta Coronae Borealis

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...148..431u&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 148, no. 2, July 1985, p. 431-438.

Astronomy and Astrophysics

Astrophysics

6

Absorption Spectra, B Stars, Early Stars, Line Spectra, Stellar Envelopes, Stellar Spectra, Aluminum, Carbon, Magnetic Flux, Photosphere, Silicon, Stellar Models, Ultraviolet Spectra

Scientific paper

Measurements are presented of the strengths and displacements of sharp absorption components of the resonance lines of Si IV, C IV, and Al III in the spectrum of θ CrB. No evidence is found for mass loss at a detectable rate. A qualitative model of a Be star is developed. It is suggested that the spectral variations of θ CrB are the result of changes in the rate at which magnetic flux is generated in the envelope of the star and extruded through the photosphere of the star.

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