Observation and study of the H-alpha emission of 33 RS CVn stars

Details Observation and study of the H-alpha emission of 33 RS CVn stars Observation and study of the H-alpha emission of 33 RS CVn stars

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986acaps...6..132l&link_type=abstract

(Acta Astrophysica Sinica, vol. 6, 1986, p. 132-142) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 10, Sept. 1986, p

Astronomy and Astrophysics

Astrophysics

Binary Stars, H Alpha Line, Stellar Spectra, Radial Velocity, Spectral Line Width, Spectrum Analysis

Scientific paper

The H-alpha emission observed in 33 RS CVn binaries is reported. The emission features of HD 8357, HD 175742, and HR 7428 are described in detail, and the H-alpha emission from six other systems that show persistent or occasional emission are briefly described and analyzed. HD 8357 is found to have a double spectrum; the radial velocity curves of the two components and their mass ratios are reported. The remaining 24 systems show absorption features in their H-alpha profiles, but their equivalent widths are considerably smaller than standard stars of similar spectral type.

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