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Asteroseismology reveals the near-core magnetic field strength in the early-B star HD 43317
Published online by Cambridge University Press: 29 August 2024
Abstract
Spectropolarimetic campaigns have established that large-scale magnetic fields are present at the surfaces of approximately 10% of massive dwarf stars. However, there is a dearth of magnetic field measurements for their deep interiors. Asteroseismology of gravity-mode pulsations combined with rotating magneto-hydrodynamical calculations of the early-B main-sequence star HD 43317 constrain its magnetic field strength to be approximately 5 × 105 G just outside its convective core. This proof-of-concept study for magneto-asteroseismology opens a new window into the observational characterisation of magnetic fields inside massive stars.
- Type
- Contributed Paper
- Information
- Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 218 - 223
- Copyright
- © The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union