3D Binary Physics in Stellar Mass Loss Predictions for Giant Stars

Watch a 22-minute astronomy lecture exploring the critical role of binary star systems in stellar evolution and mass loss predictions. Delve into the complexities of post-main sequence evolution of stars with initial masses below 8 solar masses, particularly during their giant phases characterized by strong stellar winds. Learn why current stellar evolution models, which primarily assume single stars with spherically symmetric winds, may be fundamentally flawed given that 50-100% of stars exist in binary systems. Examine how the presence of binary companions significantly impacts mass loss rates and stellar evolution, leading to potentially significant systematic errors in current models. Discover three innovative pathways proposed to better understand binary-star physics in evolved stars, specifically focusing on developing more accurate mass-loss rate relations for Asymptotic Giant Branch (AGB) and Red Supergiant (RSG) stars that account for binary interactions. Gain insights into why transitioning from 1D to 3D hydrodynamical simulations is crucial for advancing our understanding of stellar evolution in binary systems.