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Magnetism in massive early-type stars

Published online by Cambridge University Press:  25 February 2014

J.H. Grunhut ,
G.A. Wade  and
the MiMeS Collaboration
J.H. Grunhut
Affiliation:
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
G.A. Wade
Affiliation:
RMC, PO Box 17000,Station Forces, Kingston, Ontario, K7K 7B4, Canada
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Abstract

In the last five years our knowledge of magnetism in early-type stars has significantly improved because of the new gen- eration of high-resolution spectropolarimeters (ESPaDOnS@CFHT, Narval@TBL, HARPSpol@ESO). The success of the Magnetism in Massive Stars (MiMeS) Project, for example, has greatly improved our understanding of the magnetic properties of massive early-type stars; however, it was mainly focused on single stars. Summarized here is our general understanding of stellar magnetism in early-type stars and the recent findings from the MiMeS project. As recent results suggest a significant fraction of early-type stars are in binaries, this implies that the interplay between magnetic fields and binarity has yet to be investigated in any significant detail. To this end, the current analysis of the recently discovered magnetic field in the rapidly-rotating secondary star of the close, massive binary system known as Plaskett’s star – a unique system that is testing our current theories of binarity and magnetism in early-type stars, and a target for investigation in the recently accepted Binarity and Magnetic Interactions in various classes of Stars (BinaMIcS) Large Programs at CFHT and TBL – is discussed.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 64: Setting a New Standard in the Analysis of Binary Stars , 2013 , pp. 67 - 74
Copyright
© EAS, EDP Sciences, 2014

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