| Issue |
A&A
Volume 679, November 2023
|
|
|---|---|---|
| Article Number | A153 | |
| Number of page(s) | 13 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361/202245443 | |
| Published online | 28 November 2023 | |
Spin and orbital dynamics of planets undergoing thermal atmospheric tides using a vectorial approach
1
CFisUC, Departamento de Física, Universidade de Coimbra,
3004-516
Coimbra, Portugal
e-mail: acor@uc.pt
2
IMCCE, Observatoire de Paris, PSL Université,
77 Av. Denfert-Rochereau,
75014
Paris, France
Received:
11
November
2022
Accepted:
6
March
2023
Earth-mass planets are expected to have atmospheres and experience thermal tides raised by the host star. These tides transfer energy to the planet that can counter the dissipation from bodily tides. Indeed, even a relatively thin atmosphere can drive the rotation of these planets away from the synchronous state. Here we revisit the dynamical evolution of planets undergoing thermal atmospheric tides. We use a novel approach based on a vectorial formalism, which is frame independent and valid for any configuration of the system, including any eccentricity and obliquity values. We provide the secular equations of motion after averaging over the mean anomaly and the argument of the pericenter, which are suitable to model the long-term spin and orbital evolution of the planet.
Key words: planet-star interactions / planets and satellites: atmospheres / planets and satellites: dynamical evolution and stability / planets and satellites: terrestrial planets / celestial mechanics
© The Authors 2023
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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