Spectroscopic orbits of nearby solar-type dwarfs – II

Abstract Several nearby solar-type dwarfs with variable radial velocity were monitored to find their spectroscopic orbits. First orbital elements of 15 binaries (HIP 12144, 17895, 27970, 32329, 38636, 39072, 40479, 43004, 73700, 79234, 84696, 92140, 88656, 104514, and 112222) are determined. The pre...

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Published inMonthly notices of the Royal Astronomical Society Vol. 475; no. 1; pp. 1375 - 1381
Main Authors Gorynya, N A, Tokovinin, A
Format Journal Article
LanguageEnglish
Published London Oxford University Press 21.03.2018
Subjects
Binary stars
Orbital elements
Orbits
Radial velocity
Spectroscopy
Upgrading
stars: solar-type
binaries: spectroscopic
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Summary:Abstract Several nearby solar-type dwarfs with variable radial velocity were monitored to find their spectroscopic orbits. First orbital elements of 15 binaries (HIP 12144, 17895, 27970, 32329, 38636, 39072, 40479, 43004, 73700, 79234, 84696, 92140, 88656, 104514, and 112222) are determined. The previously known orbits of HIP 5276, 21443, 28678, and 41214 are confirmed and updated. The orbital periods range from 2 d to 4 yr. There are eight hierarchical systems with additional distant companions among those 19 stars. The outer visual orbit of the triple system HIP 17895 is updated and the masses of all its components are estimated. We provide radial velocities of another 16 Hipparcos stars without orbital solutions, some of those with long periods or false claims of variability.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stx3272