Title: The magnetic field of zeta Ori A
Authors: Blazère, A.
Neiner, C.
Bouret, J-C.
Tkachenko, A.
MiMeS collaboration
Issue Date: Aug-2014
Host Document: Proceedings International Astronomical Union Symposium
Conference: IAU Symposium 307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry
Article number: arXiv:1408.0178
Abstract: Magnetic fields play a significant role in the evolution of massive stars. About 7% of massive stars are found to be magnetic at a level detectable with current instrumentation and only a few magnetic O stars are known. Detecting magnetic field in O stars is particularly challenging because they only have few, often broad, lines to measure the field, which leads to a deficit in the knowledge of the basic magnetic properties of O stars. We present new spectropolarimetric Narval observations of zeta Ori A. We also provide a new analysis of both the new and older data taking binarity into account. The aim of this study was to confirm the presence of a magnetic field in zeta Ori A. We identify that it belongs to zeta Ori Aa and characterize it.
Publication status: submitted
KU Leuven publication type: IC
Appears in Collections:Institute of Astronomy

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