Micrometric measures and orbits of southern visual double stars

Argyle, R. W.; Alyner, A.; Leeuwen, F. van

doi:10.1002/asna.201412166

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Hip 80448 (2+2 Quadruple)1

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2018

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“…It contains four components in a small volume. The outer pair A,B (COO 197) has an uncertain visual orbit with a millenium-long period (Argyle et al 2015). Its secondary component was resolved in 2004 into a 0.…”

Section: Hip 80448 (2+2 Quadruple)mentioning

confidence: 99%

Spectroscopic Orbits of Subsystems in Multiple Stars. IV. Double-lined Pairs

Tokovinin

2018

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Spectroscopic orbits are computed for inner pairs in 9 hierarchical multiple systems (HIP 19639, 60845, 75663, 76816, 78163, 78416, 80448, 84789, and HD 105080) and for one simple binary HIP 61840. All subsystems are double-lined, and their periods range from 2.27 to 30.4 days. Five spectroscopic binaries are twins with equal masses. Each hierarchical system is discussed individually, providing estimates of outer periods, masses, orbital inclination, and axial rotation. For systems with three resolved visual components (HIP 60845 and 80448), the outer and inner visual orbits are determined, complementing the description of their architecture. The radial velocities of HIP 75663A, 76816B, and 78163B are found to be variable with long periods, implying that these hierarchies are 2+2 quadruples. The period-eccentricity relation for spectroscopic subsystems is discussed.

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Section: Hip 80448 (2+2 Quadruple)mentioning

confidence: 99%

Spectroscopic Orbits of Subsystems in Multiple Stars. IV. Double-lined Pairs

Tokovinin

2018

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Micrometric measures and orbits of southern visual double stars

Abstract: 525 measures of 213 visual double stars have been made using the 26.5-inch (67-cm) Innes telescope in Johannesburg and the Repsold micrometer between

Cited by 1 publication

References 30 publications

Spectroscopic Orbits of Subsystems in Multiple Stars. IV. Double-lined Pairs

Spectroscopic Orbits of Subsystems in Multiple Stars. IV. Double-lined Pairs

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