Star formation rates for model A with R_g = R_d: in isolation (black), and with a satellite on a planar radial orbit with M_sat/M_virmain = 0.2 (c_sat = 15 blue; c_sat = 25 green), M_sat/M_virmain = 0.1 (c_sat = 16 red; c_sat = 25 orange), and M_sat/M_virmain = 0.05 (c_sat = 17 purple; c_sat = 25 gray). A number pericentric passages of the satellite during the different simulations are indicated by the arrows at the top of the figure.