High inclination orbits in the secular quadrupolar three-body problem

Details High inclination orbits in the secular quadrupolar three-body problem High inclination orbits in the secular quadrupolar three-body problem

2009-09-14

arxiv.org/abs/0909.2287v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

11 pages, 6 figures. Accepted by MNRAS 2009 September 11

Scientific paper

The Lidov-Kozai mechanism allows a body to periodically exchange its eccentricity with inclination. It was first discussed in the framework of the quadrupolar secular restricted three-body problem, where the massless particle is the inner body, and later extended to the quadrupolar secular nonrestricted three body problem. In this paper, we propose a different point of view on the problem by looking first at the restricted problem where the massless particle is the outer body. In this situation, equilibria at high mutual inclination appear, which correspond to the population of stable particles that Verrier & Evans (2008,2009) find in stable, high inclination circumbinary orbits around one of the components of the quadruple star HD 98800. We provide a simple analytical framework using a vectorial formalism for these situations. We also look at the evolution of these high inclination equilibria in the non restricted case.

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