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Late-Type Ca II Emission-Line Stars in the Southern Hemisphere
Published online by Cambridge University Press: 12 April 2016
Abstract
The results of a photometric and spectroscopic study of twenty-three late-type southern stars with strong Ca II H and K emission are presented.
The presence of photometric variability, with similar properties to the photometric wave phenomenon seen in the RS Canum Venaticorum binaries, is noted in thirteen of the fifteen stars for which extensive photometry was obtained. Of twenty stars for which high resolution radial velocity measurements were obtained, ten are found to be single-lined and seven are found to be double-lined spectroscopic binaries. The periods range from 0.66 up to 53-9 days.
- Type
- Session I: General Characteristics of Active Dwarfs
- Information
- International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 75 - 76
- Copyright
- Copyright © Reidel 1983