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arXiv · 1009.3263

A MiMeS analysis of the magnetic field and circumstellar environment of the weak-wind O9 sub-giant star HD 57682

J. H. Grunhut·G. A. Wade·W. L. F. Marcolino·V. Petit·the MiMeS Collaboration
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Abstract

I will review our recent analysis of the magnetic properties of the O9IV star HD 57682, using spectropolarimetric observations obtained with ESPaDOnS at the Canada-France-Hawaii telescope within the context of the Magnetism in Massive Stars (MiMeS) Large Program. I discuss our most recent determination of the rotational period from longitudinal magnetic field measurements and Halpha variability - the latter obtained from over a decade's worth of professional and amateur spectroscopic observations. Lastly, I will report on our investigation of the magnetic field geometry and the effects of the field on the circumstellar environment.

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J. H. Grunhut, G. A. Wade, W. L. F. Marcolino, V. Petit, the MiMeS Collaboration. 2010-09-16. A MiMeS analysis of the magnetic field and circumstellar environment of the weak-wind O9 sub-giant star HD 57682. https://doi.org/10.1017/s1743921311010271

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