Distorted CO line profiles emerging in different models of planet-bearing disks. The disk inclinations were 20°, 40° and 60° shown in blue, green and red colors. For comparison, we display the symmetric double-peaked line profiles (dashed lines) emerging from a planet-free disk as well. Line profiles shown in panels a) and b) show the dependence of the distortion strength on the planetary mass. In panels c) and d) the effect of stellar mass, in panels e) and f) the effect of the orbital distance is presented. The effect of the inner cavity size on the strength of the line profile distortions is presented in panel g). The impact of the disk geometry is shown in panel h), where the line profiles emerging in model #8 were calculated in flat-disk geometry. Note that the line profiles emerging in distinct models is calculated at orbital phases where the line profiles asymmetry is the most prominent, i.e., the orbiting planet is not always at the same position angle in each figure.