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arXiv · 0901.1537

Dynamo-generated magnetic fields in fast rotating single giants

Renada Konstantinova-Antova·Michel Aurière·Klaus-Peter Schröder·Pascal Petit
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Abstract

Red giants offer a good opportunity to study the interplay of magnetic fields and stellar evolution. Using the spectro-polarimeter NARVAL of the Telescope Bernard Lyot (TBL), Pic du Midi, France and the LSD technique, we began a survey of magnetic fields in single G-K-M giants. Early results include 6 MF-detections with fast rotating giants, and for the first time a magnetic field was detected directly in an evolved M-giant: EK Boo. Our results could be explained in the terms of $α$--$ω$ dynamo operating in these giants.

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Renada Konstantinova-Antova, Michel Aurière, Klaus-Peter Schröder, Pascal Petit. 2009-01-12. Dynamo-generated magnetic fields in fast rotating single giants. https://doi.org/10.1017/s1743921309031020

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