Orbits of Six Late-type Active-Chromosphere Binaries
R. F. Griffin, N. Filiz Ak
TL;DR
This paper provides detailed spectroscopic orbital data for six late-type active-chromosphere binary stars, improving upon previous incomplete and inaccurate orbital information.
Contribution
It offers comprehensive and reliable orbital elements for six active binary stars, correcting past inaccuracies and including data previously unavailable.
Findings
Reliable orbital elements for six stars.
Correction of previous period inaccuracies.
New data for HD 138157, HD 143705, and others.
Abstract
We present spectroscopic orbits for the active stars HD 82159 (GS Leo), HD 89959, BD +39 2587 (a visual companion to HD 112733), HD 138157 (OX Ser), HD 143705, and HD 160934. This paper is a sequel to one published in this journal in 2006, with similar avowed intention, by Galvez et al.. They showed only graphs, and gave no data, and no orbital elements apart from the periods (only two of which were correct) and in some cases the eccentricities. Here we provide full information and reliable orbital elements for all the stars apart from HD 160934, which has not completed a cycle since it was first observed for radial velocity.
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