Mixing and Angular Momentum tranSport of massIvE stars. (MAMSIE)

With MAMSIE we move from observational asteroseismology to innovative stellarmodelling of the steel factories of the Universe. We shall be developing mathematical inversion methods for stellar structure based on gravity-mode oscillatio ns that probe the deep stellar interior.MAMSIE will lead to new models for a variety of single and binary stars with ma asses between 3 and 30 times the mass of the Sun, whose space photometry and high-resolution spectroscopy reveal sufficient seismic nformation on theirgravity modes to invert the frequencies and compute the stars structure. In contrast to the conventional theoretical approach to stellar evolution, the data-driven approach of minor- MAMSIE will allow us to include angular momentum transport due to internal gravity waves, as well as mixing prescriptions for turbulent entrainment, from coupling of the output of 3D hydrodynamical simulations of these phenomena to specialised seismic observables of relevance for massive stars. Our sample includes slow and fast rotators, with and without a magnetic field, with and without a stellar wind. The new models will be placed in an evol utionary context for optimal assessment of the evolution of internal rotation, angular momentum, and chemical mixing throughout stellar life ofmassive stars.The output of the stellar modelling will provide fundamentals for all topics in modern astrophysics that rely on massive star models.

Keywords:Stellar evolution, Massive Stars, Stellar Structure, Asteroseismology, 3D hydrodynamics, Mathematical Modelling

Disciplines:Astronomy and space sciences