The spectrum of RS Canum Venaticorum

Details The spectrum of RS Canum Venaticorum The spectrum of RS Canum Venaticorum

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..675n&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, Oct.-Nov. 1980, p. 675-681.

Astronomy and Astrophysics

Astronomy

13

Abundance, Eclipsing Binary Stars, Emission Spectra, Line Spectra, Stellar Spectra, Atmospheric Turbulence, Balmer Series, Chromosphere, D Lines, H Alpha Line, H Lines, K Lines, Stellar Atmospheres, Stellar Rotation

Scientific paper

Two dozen spectrograms of the eclipsing binary RS CVn, taken over the past ten years, are examined. Variable Ca II H and K emission and Balmer-line emission are seen. The variability is examined for correlations with both phase and position of the migrating photometric wave, but the limited data fail to reveal any clear correlation. There is an indication that at least H-alpha is strongest at primary minimum. The Ca II emission is consistent with a chromospheric origin, but the H-alpha emission is very broad, and may arise from circumstellar material. The secondary star appears to be metal deficient.

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