Title: The evolution of magnetic hot massive stars: Implementation of the quantitative influence of surface magnetic fields in modern models of stellar evolution,
Abstract: Large-scale dipolar surface magnetic fields have been detected in a fraction
of OB stars, however only few stellar evolution models of massive stars have
considered the impact of these fossil fields. We are performing 1D
hydrodynamical model calculations taking into account evolutionary consequences
of the magnetospheric-wind interactions in a simplified parametric way. Two
effects are considered: i) the global mass-loss rates are reduced due to
mass-loss quenching, and ii) the surface angular momentum loss is enhanced due
to magnetic braking. As a result of the magnetic mass-loss quenching, the mass
of magnetic massive stars remains close to their initial masses. Thus magnetic
massive stars - even at Galactic metallicity - have the potential to be
progenitors of `heavy' stellar mass black holes. Similarly, at Galactic
metallicity, the formation of pair instability supernovae is plausible with a
magnetic progenitor.