The impact and evolution of magnetic confinement in hot stars

Zsolt Keszthelyi [1,2], Gregg A. Wade [1], Veronique Petit [3], Georges Meynet [4], Cyril Georgy [4]

1 - Royal Military College of Canada
2 - Queen's University
3 - University of Delaware
4 - Geneva Observatory

Magnetic confinement of the winds of hot, massive stars has far-reaching consequences on timescales ranging from hours to Myr. Understanding the long-term effects of this interplay has already led to the identification of two new evolutionary pathways to form `heavy' stellar mass black holes and pair-instability supernova even at galactic metallicity. We are performing 1D stellar evolution model calculations that, for the first time, account for the surface effects and the time evolution of fossil magnetic fields. These models will be thoroughly confronted with observations and will potentially lead to a significant revision of the derived parameters of observed magnetic massive stars.

Reference: to appear in proceedings of 'Stars with a stable magnetic field: from pre-main sequence to compact remnants' conference, held in Brno, Czech Republic, 28 Aug - 1 Sep, 2017, Contributions of the Astronomical Observatory Skalnate Pleso, 2017
Status: Conference proceedings