3D Orbital Architecture of Exoplanetary Systems: KAM-Stability Analysis
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Published:2024-08
Issue:4
Volume:29
Page:565-582
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ISSN:1560-3547
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Container-title:Regular and Chaotic Dynamics
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language:en
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Short-container-title:Regul. Chaot. Dyn.
Author:
Caracciolo Chiara,Locatelli Ugo,Sansottera Marco,Volpi Mara
Abstract
AbstractWe study the KAM-stability of several single star two-planet
nonresonant extrasolar systems. It is likely that the observed
exoplanets are the most massive of the system considered. Therefore,
their robust stability is a crucial and necessary condition for the
long-term survival of the system when considering potential
additional exoplanets yet to be seen. Our study is based on the
construction of a combination of lower-dimensional elliptic and KAM
tori, so as to better approximate the dynamics in the framework of
accurate secular models. For each extrasolar system, we explore the
parameter space of both inclinations: the one with respect to the
line of sight and the mutual inclination between the planets. Our
approach shows that remarkable inclinations, resulting in
three-dimensional architectures that are far from being coplanar,
can be compatible with the KAM stability of the system. We find
that the highest values of the mutual inclinations are comparable to
those of the few systems for which the said inclinations are determined
by the observations.
Publisher
Pleiades Publishing Ltd
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1. Foreword;Regular and Chaotic Dynamics;2024-08
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