Babatunde Akinsanmi
Observatoire de Genève, Université de Genève, Switzerland

Abstract
Ultra-hot Jupiters (UHJs) orbit very close to their host stars, experiencing strong irradiation and tidal forces that markedly distinguish them of the Solar System giant planets. How the interiors of these planets change due to the extreme conditions is not yet fully understood since standard interior modelling techniques using mass and radius measurements lead to degenerate results. The planet’s response to tidal forces, its tidal deformation, provides an additional observable to better constrain the interior structure of giant planets. More precisely, phase curves can be used to measure the second fluid Love number for radial deformation, h2, which depends on the radial distribution of mass within the planet. In this talk, I will present the model for extracting precise h2 measurements from phase curves. I will also showing application of the models to some systems, and present prospects for improving interior structure models of UHJs by incorporating Love number measurements in coupled atmosphere-interior codes.

2025 May 30, 13:30

IA/U.Porto
Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto