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Empirical Tidal Dissipation in Exoplanet Hosts From Tidal Spin-up

  • Authors: Kaloyan Penev, L. G. Bouma, Joshua N. Winn, and Joel D. Hartman

2018 The Astronomical Journal 155 165.

  • Provider: AAS Journals

Caption: Figure 5.

Estimate of how the assumed ﹩{Q}_{\star }^{{\prime} }({P}_{\mathrm{tide}})﹩ dependence affects the derived ﹩{Q}_{\star }^{{\prime} }({P}_{\mathrm{tide}})﹩ relation. The displayed points come from the method described in Section 3.1. The blue points assume ﹩{Q}_{\star }^{{\prime} }({P}_{\mathrm{tide}})=\mathrm{constant}﹩, and the fit (blue line) weights these points uniformly. The orange points assume ﹩{Q}_{\star }^{{\prime} }({P}_{\mathrm{tide}})={Q}_{0}{P}_{\mathrm{tide}}^{-3.1}﹩, and solves for an appropriate Q0 (see the text). The orange line weights orange points equally. The black line (Equation (2)) is the same as from Figure 2, which was found by applying the method described in Section 2.2. Regardless of the assumed frequency scaling for each system, and regardless of the assigned weights each system receives, stars that are forced faster dissipate less efficiently.

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