Periodic Reporting for period 2 - EXWINGS (Explaining the winds of cool giant and supergiant stars with global 3D models)
Okres sprawozdawczy: 2022-03-01 do 2023-08-31
The overarching aim of project EXWINGS is a breakthrough in understanding the winds of cool giant and supergiant stars. An important objective is to develop a novel theoretical approach, that is, 3D global dynamical models which describe the pulsations, convection and winds of such evolved stars from first principles, and test the resulting dynamical structures against spatially resolved observations. Such models are a critical missing link in the current picture of the cosmic matter cycle and a necessary ingredient for understanding the late phases of stellar evolution. They are essential to answer long-standing questions, in particular:
• How are the winds launched and which physical processes determine their properties?
• How do the mass-loss rate and other wind properties depend on fundamental stellar parameters?
• Which types of dust are produced by AGB and RSG stars, and in which quantities?