The classical picture of protoplanetary discs forming smooth, continuous structures of gas and dust has been challenged by the growing number of spatially resolved observations. These observations indicate that radial discontinuities and large-scale asymmetries may be common features of the emission of protoplanetary discs, which are often interpreted as signatures of the presence of (unseen) planetary companions. During this seminar, I will report our recent and ongoing efforts to predict the dust’s radio emission in protoplanetary discs due to the presence and orbital evolution of giant planets, through gas+dust hydrodynamical simulations post-processed with dust radiative transfer calculations. I will show via these models that recent ALMA observations strongly suggest the presence of several planets in the discs around MWC 758 and HD 169142.
Local scientific contacts: S. Mathis, A. Astoul. Organizer: V. Lebouteiller