Influence of the planet introduction time on the evolution of vortex properties. The panels are as in Fig. 3. Solid and dashed lines show models with τ_ramp = 100 orbits and 1000 orbits, respectively. The τ_ramp = 100 orbits curves are shifted to the right (see the horizontal lines) to illustrate that the curves have the same shape in the decay phase, independent of τ_ramp. We note that the final evolution of the vortex, after it has reached its minimum in vortensity, is the same independent of planet introduction time.