Fig. 1

Synthetic FARGO-3D images of spiral arms created by the potential of a super-Earth-mass planet in the gas component (panels a–c) and in the large dust grain component with St = 1 (panels d–f). The images show the perturbation of the spiral normalized to the unperturbed disk. From left to right: normalized perturbation of the surface density (a and d), the perturbation in radial velocity with respect to the Keplerian velocity (b and e), and the normalized perturbation in azimuthal velocity (c and f).
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