Orbits of Six Late-type Active-Chromosphere Binaries

Details Orbits of Six Late-type Active-Chromosphere Binaries Orbits of Six Late-type Active-Chromosphere Binaries

2010-04-11

arxiv.org/abs/1004.1835v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

17 pages, 8 figures. Accepted for publication in Astrophysics & Space Science

Scientific paper

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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