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Excitation of the obliquity of Earth-like planets via tidal forcing using the Andrade rheology

Published online by Cambridge University Press:  16 October 2024

Ema F. S. Valente Open the ORCID record for Ema F. S. Valente [Opens in a new window]  and
Alexandre C. M. Correia Open the ORCID record for Alexandre C. M. Correia [Opens in a new window]
Ema F. S. Valente*
Affiliation:
CFisUC, Departamento de Física, Universidade de Coimbra, 3004-516 Coimbra, Portugal
Alexandre C. M. Correia
Affiliation:
CFisUC, Departamento de Física, Universidade de Coimbra, 3004-516 Coimbra, Portugal IMCCE, Observatoire de Paris, PSL Université, 77 Av. Denfert-Rochereau, 75014 Paris, France
*
email: emavalente@ua.pt
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Abstract

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Close-in planets undergo strong tidal effects with their host stars that modify their spins and orbits. Adopting a Maxwell rheology, it has been shown that for the 5/2 and 7/2 spin-orbit resonances, the obliquity of these planets can stabilise at a high value. Here, we show that these high obliquity metastable states can also be observed for the same spin-orbit resonances considering the Andrade rheology.

Keywords

planet-star interactionsdynamical evolution and stabilityterrestrial planets
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S382: Complex Planetary Systems II: Latest Methods for an Interdisciplinary Approach , December 2022 , pp. 191 - 197
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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