Dynamical phase-space portraits for a planetesimal in protoplanetary disks of various masses, perturbed by a stellar companion at various inclinations showing Kozai resonance. The eccentricity vector is plotted in cartesian coordinates on each panel (x = ecosg,   y = esing). Regions of libration of argument of perihelion are shown as red curves, while blue curves depict circulation. The top panels represent a mass-less disk, middle panels correspond to a M_disk = 1   M_Jup disk and the bottom panels show a M_disk = 10   M_Jup disk. Note that the Kozai resonance disappears as the disk mass is increased.