The MiMeS Survey of Magnetism in Massive Stars
G. A. Wade, J. H. Grunhut, the MiMeS Collaboration
TL;DR
The MiMeS survey systematically searched for magnetic fields in over 350 hot, massive OB stars, discovering magnetic fields in 20 stars and revealing diverse magnetic properties and their effects on stellar winds.
Contribution
This study provides the first large-scale, high-precision survey of magnetism in massive stars, identifying magnetic properties and their influence on stellar phenomena.
Findings
20 stars detected as magnetic
Magnetic wind confinement observed in all magnetic O stars
Magnetic fields absent in classical Be stars
Abstract
The Magnetism in Massive Stars (MiMeS) survey represents a high precision systematic search for magnetic fields in hot, massive OB stars. To date, MiMeS Large Programs (ESPaDOnS@CFHT, Narval@TBL, [email protected]) and associated PI programs (FORS@VLT) have yielded nearly 1200 circular spectropolarimetric observations of over 350 OB stars. Within this sample, 20 stars are detected as magnetic. Follow-up observations of new detections reveals (i) a large diversity of magnetic properties, (ii) evidence for magnetic wind confinement in optical spectra of all magnetic O stars, (iii) the presence of strong, organized magnetic fields in all known Galactic Of?p stars, and (iv) a complete absence of magnetic fields in classical Be stars.
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