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.

to appear in Proceedings of IAU Symposium 329

References in corpus (13)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• Dynamical Simulations of Magnetically Channeled Line-Driven Stellar Winds: II. The Effects of Field-Aligned Rotation
• Dynamical Simulations of Magnetically Channeled Line-Driven Stellar Winds: III. Angular Momentum Loss and Rotational Spindown
• The MiMeS Survey of Magnetism in Massive Stars: Introduction and overview
• Tight asteroseismic constraints on core overshooting and diffusive mixing in the slowly rotating pulsating B8.3V star KIC 10526294
• On non-axisymmetric magnetic equilibria in stars
• Magnetic massive stars as progenitors of "heavy" stellar-mass black holes
• Two bi-stability jumps in theoretical wind models for massive stars and the implications for Luminous Blue Variable supernovae
• An `Analytic Dynamical Magnetosphere' formalism for X-ray and optical emission from slowly rotating magnetic massive stars
• Modeling the early evolution of massive OB stars with an experimental wind routine
• Effect of a magnetic field on massive star winds I: mass-loss and velocity for a dipole field
• Magnetic fields in non-convective regions of stars

Cited by in corpus (6)

• The Magnetic Early B-type Stars III: A main sequence magnetic, rotational, and magnetospheric biography
• The effects of surface fossil magnetic fields on massive star evolution: I. Magnetic field evolution, mass-loss quenching and magnetic braking
• The effects of surface fossil magnetic fields on massive star evolution: II. Implementation of magnetic braking in MESA and implications for the evolution of surface rotation in OB stars
• First results from the LIFE project: discovery of two magnetic hot evolved stars
• Magnetism in High-Mass Stars
• A 3D short-characteristics method for continuum and line scattering problems in the winds of hot stars