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Dynamic evolution due to tide in differentiated exoplanets and satellites

Grant number: 16/20189-9
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): January 01, 2017
Effective date (End): February 28, 2022
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Positional Astronomy and Celestial Mechanics
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Sylvio Ferraz de Mello
Grantee:Hugo Alberto Folonier
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:16/13750-6 - Brazil in space: Astrophysics and Engineering, AP.TEM
Associated scholarship(s):19/11276-3 - Extension of the Newtonian creep tide theory to the spatial case., BE.EP.PD


This project has the purpose to study the dynamic evolution due to tidal forces produced by the interaction of close-in differentiated bodies (star-planet or planet-satellite). Recently, a new tidal rheophysical theory was developed in the IAG-USP, which takes into account the nature (rheology) of objects (Ferraz-Mello, 2013; 2015a), and its extension to differentiated bodies (Folonier & Ferraz-Mello, 2016). This extension is the first model of the literature, which allows the study of the dynamical tides in complex systems, where the hypothesis of homogeneity cannot be applied. Because it is a recent theory, only a few examples might be addressed. In addition, there are points at which the theory needs to be improved, as the inclusion of systems in which the axes of rotation of the bodies are inclined with respect to the plane of the relative orbital motion. In this proposal, we want to introduce improvements in the development of the theory and its application to many real systems star-planet and planet-satellite whose dynamic evolution can be directly affected by the internal structure of differentiated bodies. (AU)

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Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ZOPPETTI, F. A.; FOLONIER, H.; LEIVA, A. M.; BEAUGE, C. Creep tide model for the three-body problem The rotational evolution of a circumbinary planet. Astronomy & Astrophysics, v. 651, JUL 9 2021. Web of Science Citations: 0.
FERRAZ-MELLO, SYLVIO; BEAUGE, CRISTIAN; FOLONIER, HUGO A.; GOMES, GABRIEL O. Tidal friction in satellites and planets. The new version of the creep tide theory. European Physical Journal-Special Topics, v. 229, n. 8, SI, p. 1441-1462, MAY 2020. Web of Science Citations: 1.
GOMES, G. O.; FOLONIER, H. A.; FERRAZ-MELLO, S. Rotation and figure evolution in the creep tide theory: a new approach and application to Mercury. CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY, v. 131, n. 12 DEC 2019. Web of Science Citations: 0.
ZOPPETTI, F. A.; BEAUGE, C.; LEIVA, A. M.; FOLONIER, H. A self-consistent weak friction model for the tidal evolution of circumbinary planets. Astronomy & Astrophysics, v. 627, JUL 9 2019. Web of Science Citations: 0.
FOLONIER, H. A.; FERRAZ-MELLO, S.; ANDRADE-INES, E. Tidal synchronization of close-in satellites and exoplanets. III. Tidal dissipation revisited and application to Enceladus. CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY, v. 130, n. 12 DEC 2018. Web of Science Citations: 1.

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