SPH modelling of companion-perturbed AGB outflows including a new morphology classification schemeS. Maes, W. Homan, J. Malfait, L. Siess, J. Bolte, F. De Ceuster and L. DecinA&A, 653 (2021) A25DOI: https://doi.org/10.1051/0004-6361/202140823