Host star’s evolutionary tracks in the SwP scenario. Evolution of stellar surface-rotation rate (top panel), stellar Rossby number (middle panel), and X-ray luminosity (bottom panel) under the impact of planetary inward migration. For the stellar initial surface-rotation rate, we considered the following values: Ω_in = 1, 2, 3.2, 4, 5, 6, 7, 8, 9, 10, 18 Ω_⊙. For the planetary mass, we considered M_pl = 3 M_J, and for the initial planetary orbital distance, we considered a_in = 0.025 AU. The meaning of the other quantities is the same as in Fig. 3.