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Title:
Lidov-Kozai stability regions in the alpha Centauri system
Authors:
Giuppone, C. A.; Correia, A. C. M.
Affiliation:
AA(Universidad Nacional de Córdoba, Observatorio Astronómico, IATE, Laprida 854, 5000, Córdoba, Argentina ; CIDMA, Departamento de Física, Universidade de Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal), AB(CIDMA, Departamento de Física, Universidade de Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal; ASD, IMCCE-CNRS UMR 8028, Observatoire de Paris, 77 Av. Denfert-Rochereau, 75014, Paris, France)
Publication:
Astronomy & Astrophysics, Volume 605, id.A124, 10 pp. (A&A Homepage)
Publication Date:
09/2017
Origin:
EDP Sciences
Astronomy Keywords:
binaries: close, methods: numerical, celestial mechanics, planetary systems
DOI:
10.1051/0004-6361/201730491
Bibliographic Code:
2017A&A...605A.124G

Abstract

The stability of planets in the alpha Centauri AB stellar system has been studied extensively. However, most studies either focus on the orbital plane of the binary or consider inclined circular orbits. Here, we numerically investigate the stability of a possible planet in the alpha Centauri AB binary system for S-type orbits in an arbitrary spatial configuration. In particular, we focus on inclined orbits and explore the stability for different eccentricities and orientation angles. We show that large stable and regular regions are present for very eccentric and inclined orbits, corresponding to libration in the Lidov-Kozai resonance. We additionally show that these extreme orbits can survive over the age of the system, despite the effect of tides. Our results remain qualitatively the same for any compact binary system.
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