Snapshot of the logarithm of the surface density of a mass-less disk at the end of the initialization period (t = 200 P_orb). “CMS” indicates that the simulation is in the center-of-mass system, and “star” indicates that the simulation is centered on the star and the disk has been initialized around the star. “N-body” indicates that the simulation is centered on the star, but the disk has been initialized around the center of mass of the N-body system. All plots use the same color scale.