During the last decade and a half, the new generation spectropolarimeter Narval at Pic du Midi, France allowed the study of weak magnetic fields in cool giant stars that are fairly evolved after main sequence. We present a short summary on the recent knowledge on the magnetic fields and activity in giants situated in the upper right part of the Hertzsprung-Russel (H-R) diagram and discuss on the possible mechanisms for magnetic field generation in the asymptotic giants branch (AGB) and post-AGB stars.
- The origins of the magnetic field in tip-RGB, AGB and post-AGB stars
- Renada Konstantinova-AntovaStefan Georgiev - Université de Montpellier, LUPM - Laboratoire Univers et Particules de MontpellierAgnès Lèbre - Université de Montpellier, LUPM - Laboratoire Univers et Particules de MontpellierCorinne Charbonnel - Institut de Recherche en Astrophysique et PlanétologieAna Palacios - Université de Montpellier, LUPM - Laboratoire Univers et Particules de MontpellierMichel Aurière - Institut de Recherche en Astrophysique et Planétologie
- 9963499909311
- LUPM - Laboratoire Univers et Particules de Montpellier; OREME - Observatoire de REcherche Montpelliérain de l'Environnement
- English
- Working paper
- hal-04661789