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arXiv · 1009.3246

Discovery of the most rapidly-rotating, non-degenerate, magnetic massive star by the MiMeS collaboration

J. H. Grunhut·G. A. Wade·T. Rivinius·W. L. F. Marcolino·R. H. D. Townsend·the MiMeS Collaboration
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Abstract

We discuss the recent detection of a strong, organized magnetic field in the bright, broad-line B2V star, HD 142184, using the ESPaDOnS spectropolarimeter on the CFHT as part of the Magnetism in Massive Stars (MiMeS) survey. We find a rotational period of 0.50833 days, making it the fastest-rotating, non-degenerate magnetic star ever detected. Like the previous rapid-rotation record holder HR 7355 (also discovered by MiMeS: Oksala et al. 2010, Rivinius et al. 2010), this star shows emission line variability that is diagnostic of a structured magnetosphere.

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J. H. Grunhut, G. A. Wade, T. Rivinius, W. L. F. Marcolino, R. H. D. Townsend, the MiMeS Collaboration. 2010-09-16. Discovery of the most rapidly-rotating, non-degenerate, magnetic massive star by the MiMeS collaboration. https://doi.org/10.1017/s1743921311010283

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