A study of active regions on RS CVn stars
Intense observational scrutiny was combined with theoretical modeling efforts for three regular RS CVn stellar systems, II Peg, UX Ari, and HR 1099. Observational analysis consisted of application of the technique of spectral subtraction to yield excess emission profiles for these stars; these profiles were considered indicative of extraphotospheric activity. The subtraction technique was applied to the H alpha, H beta, Ca II H, Ca II K, and Ca II infrared triplet lines, and the resulting fluxes were examined for correlations with phase and with each other. An analysis of the velocity information present in the line profiles was also attempted. Theoretical work consisted of the application of radiative transfer models to stellar plage and prominence models in an attempt to determine the physical nature of the active regions on these stars. The radiative transfer models were also used to test the limits of validity of the spectral subtraction technique itself.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (USA). Davey Lab.
- OSTI ID:
- 6105074
- Country of Publication:
- United States
- Language:
- English
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Radio & X-Ray Sources
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GENERAL PHYSICS
BINARY STARS
DATA
ENERGY LEVELS
ENERGY TRANSFER
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INFRARED SPECTRA
MASS TRANSFER
MATHEMATICAL MODELS
NUMERICAL DATA
SPECTRA
STAR MODELS
STARS
THEORETICAL DATA