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Title:
Discovery of two magnetic massive stars in the Orion Nebula Cluster: a clue to the origin of neutron star magnetic fields?
Authors:
Petit, V.; Wade, G. A.; Drissen, L.; Montmerle, T.; Alecian, E.
Affiliation:
AA(Départment de physique, génie physique et optique, Centre de recherché en astrophysique du Québec, Université Laval, Québec (QC) G1K 7P4, Canada), AB(Department of Physics, Royal Military College of Canada, PO Box 17000, Stn Forces, Kingston K7K 4B4, Canada), AC(Départment de physique, génie physique et optique, Centre de recherché en astrophysique du Québec, Université Laval, Québec (QC) G1K 7P4, Canada), AD(Laboratoire d'Astrophysique de Grenoble, Université Joseph Fourier, CNRS, BP 53, 38041 Grenoble Cedex, France), AE(Department of Physics, Royal Military College of Canada, PO Box 17000, Stn Forces, Kingston K7K 4B4, Canada; Observatoire de Paris, LESIA, Place Jules Janssen, F-92195 Meudon Cedex, France)
Publication:
Monthly Notices of the Royal Astronomical Society: Letters, Volume 387, Issue 1, pp. L23-L27. (MNRAS Homepage)
Publication Date:
06/2008
Origin:
MNRAS
MNRAS Keywords:
stars: early-type, stars: magnetic fields, stars: neutron, pulsars: general
DOI:
10.1111/j.1745-3933.2008.00474.x
Bibliographic Code:
2008MNRAS.387L..23P

Abstract

The origin of the magnetic fields in neutron stars, and the physical differences between magnetars and strongly magnetized radio pulsars are still under vigorous debate. It has been suggested that the properties of the progenitors of neutron stars (the massive OB stars), such as rotation, magnetic fields and mass, may play an important role in the outcome of core collapse leading to Type II supernovae. Therefore, knowing the magnetic properties of the progenitor OB stars would be an important asset for constraining models of stellar evolution leading to the birth of a neutron star. We present here the beginning of a broad study with the goal of characterizing the magnetic properties of main-sequence massive OB stars. We report the detection of two new massive magnetic stars in the Orion Nebula Cluster: Par1772 (HD36982) and NUOri (HD37061), for which the estimated dipole polar strengths, with 1σ error bars, are 1150+320-200 and 620+220-170G, respectively.
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