The ALMA view of MP Mus (PDS 66): a protoplanetary disk with no visible gaps down to 4 au scales

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   Résumé scientifique

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   Résumé scientifique

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   Résumé scientifique

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   Résumé scientifique

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   Résumé scientifique

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   Résumé scientifique

   Spatially resolved images of debris disks frequently reveal complex morphologies such as gaps, spirals, and warps. Most existing models for explaining such morphologies focus on the role of massive perturbers (i.e. planets, stellar companions), ignoring the gravitational effects of the disk itself. Here we investigate the secular interaction between an eccentric planet and a massive, external debris disk using a simple analytical model. Our framework accounts for both the gravitational coupling between the disk and the planet, as well as the disk self-gravity -- with the limitation that it ignores the non-axisymmetric component of the disk (self-)gravity. We find generally that even when the…