The Idea long-period variable stars show long period pulsations (!) large amplitude excursions complex spectra mass loss simulating pulsations can show long-term effects, and get at root structure

Simulations: 1-D Hydrodyamics of a pulsating star atmosphere include radiative transfer, chemistry Next steps: 3-D (Gary Turner) Applications: spectra of Mira variables AGB Mass loss rates the future of our Sun primordial supernovae