Orbital evolution (top panel) and the corresponding characteristic migration time (second panel from top) for planets with masses m_p = 10 mθ and 100 mθ at initial orbits r_p = 1 AU and 4 AU. Additional panels from top to bottom show the total accretion rate as well as the disk aspect ratio and the critical planet mass of the gap formation (Eq. (26)) in the vicinity of the planet for the system with initial M₁ = 7.0 M_⊙, a = 30 AU. We note that the critical planetary mass of the gap formation is shown only for giants.