The RS Canum Venaticorum phenomena. I - H-alpha emission in HR 1099

Details The RS Canum Venaticorum phenomena. I - H-alpha emission in HR 1099 The RS Canum Venaticorum phenomena. I - H-alpha emission in HR 1099

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...276..243f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 276, Jan. 1, 1984, p. 243-253. Research supported by the Natural Sciences a

Astronomy and Astrophysics

Astrophysics

24

Binary Stars, H Alpha Line, Radio Stars, Stellar Flares, Stellar Spectra, Chromosphere, Data Reduction, Emission Spectra, Radial Velocity, Spectral Line Width

Scientific paper

Photographic H-alpha spectrophotometry of the active chromosphere star HR 1099 is presented. The data were obtained during both radio-quiescent periods and radio flares during the years 1976-1979. This paper presents the data and data reduction techniques. In particular, the method used to correct the observed H-alpha profiles for the distortion introduced by the irregular 'continuum,' due to the underlying absorption lines, is presented and discussed. The techniques for measuring the equivalent widths and estimating the errors are presented. In addition to the major results presented earlier, it is found that the line widths of the H-alpha emission are broader than can be accounted for by rotation and orbital motion.

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