Orbital evolution of an initially Jupiter-mass planet. In model R the gas is only removed, but not added to the planet’s mass. In model RA the gas is accreted and increases the planet’s mass and in RAM the linear momentum of the accreted gas is also added to the planet. Model N is for comparison, no gas is removed in the vicinity of the planet. Model RA and RAM are very similar so they are plotted as dashed lines.