Searching for Magnetic Fields in the Descendants of Massive OB Stars

Abstract

We present the results of a recent survey of cool, late-type supergiants - the descendants of massive O- and B-type stars - that has systematically detected magnetic fields in these stars using spectropolarimetric observations obtained with ESPaDOnS at the Canada-France-Hawaii Telescope. Our observations reveal detectable, often complex, Stokes V Zeeman signatures in Least-Squares Deconvolved mean line profiles in a significant fraction of the observed sample of ~30 stars.

2 pages, 1 figure, IAUS 272 - Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits

References in corpus (2)

• Systematic detection of magnetic fields in massive, late-type supergiants
• EK Eridani: the tip of the iceberg of giants which have evolved from magnetic Ap stars