Spectroscopic orbits of ten nearby solar-type dwarfs

Abstract

Several nearby solar-type dwarfs with variable radial velocity were monitored to find their spectroscopic orbits. Orbital elements of HIP 179, 1989, 2981, 5276, 6439, 11218, 21443, 96434 are determined, as well as tentative orbits for HIP 28678 and 41214. We discuss each of those objects. Three of the four double-lined binaries are twins with nearly equal components. All four orbits with periods shorter than 10 days are circular, the remaining orbits are eccentric.

arXiv commentAccepted by MNRAS; 6 pages, 2 figures

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• Binary Star Fractions from the LAMOST DR4
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• Spectroscopic orbits of nearby solar-type dwarfs. II