Direction of migration in the adiabatic migration regime for a nonirradiated evolving α-disk. Blue indicates regions of inward migration while green shows outward migration. The black lines are the migration tracks of an evolving protoplanet set into the disk at 2000 yr. The track shown with the solid line uses the BMF migration model while the dashed line is calculated with the RED model (see Sect. 3.4). The symbols mark important points in the evolution and are discussed in the text.