Spectroscopic orbits of ten nearby solar-type dwarfs

摘要

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