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The Tale of a Hungry Subgiant and Its Brown Dwarf: Interior Radiative Damping Dominates the Tidal Evolution of TOI-5882

  • Authors: Ritvik Sai Narayan, Melinda Soares-Furtado, Richard H. D. Townsend

Ritvik Sai Narayan et al 2026 The Astrophysical Journal Letters 1005 .

  • Provider: AAS Journals

Caption: Figure 3.

Tidal response of TOI-5882 as a function of the dimensionless forcing frequency σm,korb, computed with GYRE-tides using αfrq scanning continuously to sample the forcing-frequency space. The blue and orange curves show the logarithmic amplitudes of the normalized radial displacement (﹩\mathrm{log}| {\tilde{\xi }}_{r}/R| ﹩) and luminosity perturbation (﹩\mathrm{log}| \delta \tilde{L}/L| ﹩), respectively, both evaluated at the stellar surface. Finally, gray points show the inverse normalized-mode inertia from a free-oscillation GYRE calculation spanning the same frequency range. We use the same stellar model as in Figure 2 to perform these calculations.

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