Open Access

Fig. 8

image

Secular evolution of a star–planet system with M* = 1 M, P*,ini = 5 days, and mp = 1 MJup. The initial semi-major axis was set to 0.025 AU (dark green curves), 0.035 AU (medium green curves), and 0.045 AU (light green curves). Top panel: rotation rate of the envelope (solid lines) and of the radiative zone (dashed lines) of the star. Middlepanel: semi-major axis (solid lines), corotation radius of the star (dashed lines) and limit of excitation of the dynamical tide (dotted lines). Bottom panel: modified tidal quality factor.

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