
Fossil field decay due to nonlinear tides in massive binaries
Context. Surface magnetic fields have been detected in 5% to 10% of isolated massive stars, hosting outer radiative envelopes. They are often thought to have a fossil origin, i.e. inherited from the stellar formation phase. Yet, magnetic massive stars are scarcer in (close) short-period binaries, as reported by the BinaMIcS collaboration. Conclusions. We predict that the turbulent Joule diffusion of fossil fields would occur in a few million years for several short-period massive binaries. Therefore, turbulent tidal flows could explain the observed dearth of some short-period magnetic binaries.
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Work Title | Fossil field decay due to nonlinear tides in massive binaries |
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License | All rights reserved |
Work Type | Article |
Deposited | October 02, 2019 |