The eccentricity growth rate (upper) and the precession rate (lower) as a function of the disk outer radius for the linear models with surface density profile given in Equation (13) with C = 5, σ = 0.06 and a varying center for the Gaussian peak, r_c. The mass ratio is q = 0.4, H/r = 0.02, and r_out = 0.85 r_l. In the lower panel, the dotted–dashed line shows the contribution from the dynamical gravitational term (Equation (16)), the dashed line shows the contribution from the de/dr term (Equation (17)), and the dotted line shows the contribution from the pressure terms (Equation (18)).