Homogeneous model for the TRAPPIST-1e planet with an icy layer
| Autor: | Gevorgyan, Yeva |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | A&A 650, A141 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/0004-6361/202140736 |
| Popis: | In this work we investigate whether a multilayered planet can be approximated as a homogeneous planet, and in particular how well the dissipation rate of a multilayered planet can be reproduced with a homogeneous rheology. We study the case of a stratified body with an icy crust that, according to recent studies, displays a double peak feature in the tidal response that cannot be reproduced with a homogeneous planet with an Andrade rheology. We revisit the problem with a slightly more complex rheology for the homogeneous body, the Sundberg-Cooper rheology, which naturally has a double peak feature, and apply the model to the TRAPPIST-1e planet. Our results compare very well with the results obtained when employing a multilayered model, showing that it is possible to approximate the behavior of a multilayer icy planet with a homogeneous planet using the Sundberg-Cooper rheology. This highlights the fact that we do not need the complexity of the multilayer planet model in order to estimate the tidal dissipation of an icy planet. Comment: Accepted in A&A. Short note, 13 pages, 5 figures, 15 references |
| Databáze: | arXiv |
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