Magnetic fields of AGB and post-AGB stars
Journal article, 2019

There is ample evidence for the presence of strong magnetic fields in the envelopes of (post-)Asymptotic Giant Branch (AGB) stars as well as supergiant stars. The origin and role of these fields are still unclear. This paper updates the current status of magnetic field observations around AGB and post-AGB stars, and describes their possible role during these stages of evolution. The discovery of magnetically aligned dust around a supergiant star is also highlighted. In our search for the origin of the magnetic fields, recent observations show the signatures of possible magnetic activity and rotation, indicating that the magnetic fields might be intrinsic to the AGB stars.

stars: AGB and post-AGB

spots

supergiants

polarization

rotation

magnetic fields

Author

Wouter Vlemmings

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics

Proceedings of the International Astronomical Union

1743-9213 (ISSN) 1743-9221 (eISSN)

Vol. 14 19-26

Subject Categories

Astronomy, Astrophysics and Cosmology

Other Earth and Related Environmental Sciences

Fusion, Plasma and Space Physics

Infrastructure

Onsala Space Observatory

DOI

10.1017/S1743921318005367

More information

Latest update

1/16/2020