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2020MNRAS.493.5583T - Mon. Not. R. Astron. Soc., 493, 5583-5595 (2020/April-3)

Resonant capture in quadruple stellar systems.

TREMAINE S.

Abstract (from CDS):

Some quadruple star systems in the hierarchical 2 + 2 configuration exhibit orbit-orbit resonances between the two compact binaries. We show that the most important resonances occur at period ratios of 1:1, 3:2, and 2:1. We describe the conditions required for capture and show that they can be satisfied at the 3:2 and 2:1 resonances in binaries that migrate significantly in semimajor axis after circularization, probably through magnetic braking or gravitational radiation.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): celestial mechanics - binaries: close - binaries: eclipsing

Simbad objects: 5

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