IvS Seminar: Camille Landri (14/11/2024)

Camille Landri - "Exploring the evolution of massive stars in binaries with 3D simulations" (IvS seminar 14/11/2024)
Abstract: Massive stars are commonly found in binary systems with such low separations that the stars will eventually interact with each other, through tidal forces, phases of mass transfer or even winds. Binary interactions play a crucial role in shaping the evolution of stellar systems, leading to the formation of exotic stellar objects and producing a variety of transient phenomena associated with accretion and stellar evolution. However, the complexity of binary interactions, accompanied by an extensive parameter space, presents a significant challenge in constraining models of binary evolution. I present part of the work performed for my PhD studies, during which I simulated different types of stellar interactions to constrain new and existing models of binary and stellar evolution. I will discuss a new scenario in which a companion repeatedly grazes the outer envelope of a red supergiant, launching asymmetric dust-driven winds. Additionally, I will present a first attempt at incorporating the prior evolution of a massive binary into the 3D simulation of its common envelope phase.