Discovery of the most rapidly-rotating, non-degenerate, magnetic massive star by the MiMeS collaboration
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.
- Publication:
-
Active OB Stars: Structure, Evolution, Mass Loss, and Critical Limits
- Pub Date:
- July 2011
- DOI:
- arXiv:
- arXiv:1009.3246
- Bibcode:
- 2011IAUS..272..190G
- Keywords:
-
- techniques: spectroscopic;
- stars: magnetic fields;
- stars: individual (HD 142184);
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 2 pages, 2 figures, IAUS272 - Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits