Spirals, rings and arcs around evolved stars

The Hubble (HST) and Spitzer telescopes were the first instruments to unveil the presence of rings and arcs around evolved low-mass stars (AGB stars, proto-PNe and PNe) in great detail. Since the mid-2000s it was suggested that these structures were ubiquitous around evolved low-mass stars. We searched the complete archive of the HST and Spitzer to characterise these structures, study their physical properties and address their formation mechanisms. In this talk, we present the observational results of our survey, the predictions of simple radiation-hydrodynamic simulations as well as the future of the project.