Spectroscopic orbits of subsystems in multiple stars. VI
arXiv:1910.04143 · doi:10.3847/1538-3881/ab4c94
Abstract
Thirteen spectroscopic orbits of late-type stars are determined from the high-resolution spectra taken with the CHIRON echelle spectrometer at the 1.5-m CTIO telescope. Most (HIP 14194B, 40523A, 41171A, 51578A, 57572B, 59426A, 62852B, 66438A, 87813B, and 101472A) are inner subsystems in hierarchical multiple stars with three or four components. The periods range from 2.2 to 1131 days. Masses of the components, orbital inclinations, and projected rotation velocities are estimated, the presence or absence of the lithium line is noted. In addition to those systems, HIP 57021 is a simple 54-day twin binary, and HIP 111598 is a compact triple-lined system with periods of 5.9 and 271 days. This object is likely old, but, nevertheless, the secondary component in the inner pair does not rotate synchronously with the orbit. The period-eccentricity diagram of 528 known inner low-mass spectroscopic subsystems (including 36 from this paper series) is given. The distribution of the inner periods is smooth, without any details around the tidal circularization period of ~10 d.
ACcepted by AJ; 11 pages, 15 figures, 5 tables
References in corpus (6)
- Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
- The Dartmouth Stellar Evolution Database
- A catalog of chromospherically active binary stars (third edition)
- Speckle interferometry at SOAR in 2018
- Spectroscopic orbits of subsystems in multiple stars. V
- Notes on the disentangling of spectra I. Enhancement in precision
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- TICs 167692429 and 220397947: The first compact hierarchical triple stars discovered with TESS
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- The HD 98800 quadruple pre-main sequence system. Towards full orbital characterisation using long-baseline infrared interferometry
- Comparison of Gaia and Hipparcos parallaxes of close visual binary stars and the impact on determinations of their masses
- Spectroscopic Orbits of Subsystems in Multiple Stars. X (Summary)
- Spectroscopic orbits of subsystems in multiple stars. VIII
- Binaries masses and luminosities with Gaia DR3