Evolution and stability of Laplace-like resonances under tidal dissipation. Issue Volume 15:Issue S364(2019) (October 2021)

• Record Type: Journal Article
• Authors: Celletti, A.; Karampotsiou, E.; Lhotka, C.; Pucacco, G.; Volpi, M.
• Editors: Celletti, Alessandra; Galeş, Cătălin; Beaugé, Cristian; Lemaître, Anne
• Is Part Of: Proceedings of the International Astronomical Union. Volume 15:Issue S364(2019)
• Page Start: 128
• Page End: 133
• Publication Date: 2021-10
• Subjects: Celestial mechanics -- Planets and satellites -- General methods -- Numerical; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921322000552
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: The Laplace resonance is a configuration that involves the commensurability between the mean motions of three small bodies revolving around a massive central one. This resonance was first observed in the case of the three inner Galilean satellites, Io, Europa, and Ganymede. In this work the Laplace resonance is generalised by considering a system of three satellites orbiting a planet that are involved in mean motion resonances. These Laplace-like resonances are classified in three categories: first-order (2:1&2:1, 3:2&3:2, 2:1&3:2), second-order (3:1&3:1) and mixed-order resonances (2:1&3:1). In order to study the dynamics of the system we implement a model that includes the gravitational interaction with the central body, the mutual gravitational interactions of the satellites, the effects due to the oblateness of the central body and the secular interaction of a fourth satellite and a distant star. Along with these contributions we include the tidal interaction between the central body and the innermost satellite. We study the survival of the Laplace-like resonances and the evolution of the orbital elements of the satellites under the tidal effects. Moreover, we study the possibility of capture into resonance of the fourth satellite.