Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270..355t&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. 355-369.
Astronomy and Astrophysics
Astrophysics
26
B Stars, H Beta Line, Infrared Photometry, Secular Variations, Stellar Spectra, Continuous Radiation, Emission Spectra, Stellar Envelopes
Scientific paper
A comparison is conducted between long-term changes in the optical and IR continuum energy distribution of Gamma Cas and the line-shape variability of the H-beta emission line. Attention is given to two models that can explain the V/R variations: (1) the expanding/contracting spherical shell model, and (2) the nonaxisymmetric disk model. It is concluded that the expanding/contracting shell model cannot account for the constancy of the IR continuum, and that the nonaxisymmetric disk model agrees best with observations.
Dunlop S. R.
Persi Paolo
Telting John H.
Waters Laurens B. F. M.
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