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Seeking the progenitors of magnetic Ap stars: A search for magnetic fields in HAeBe stars using FORS1 and ESPaDOnS

Published online by Cambridge University Press:  13 January 2006

G. Alecian ,
O. Richard ,
S. Vauclair ,
D. Drouin ,
G.A. Wade ,
S. Bagnulo ,
J.D. Landstreet ,
E. Mason ,
J. Silvester  and
E. Alecian
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D. Drouin
Affiliation:
Royal Military College of Canada, Kingston, Canada
G.A. Wade
Affiliation:
Royal Military College of Canada, Kingston, Canada
S. Bagnulo
Affiliation:
European Southern Observatory, Santiago, Chile
J.D. Landstreet
Affiliation:
Department of Physics & Astronomy, University of Western Ontario, London, Canada
E. Mason
Affiliation:
Department of Physics & Astronomy, University of Western Ontario, London, Canada
J. Silvester
Affiliation:
Royal Military College of Canada, Kingston, Canada Department of Physics, Queen's University, Kingston, Canada
E. Alecian
Affiliation:
Obs. de Paris LESIA, Meudon, France
T. Böhm
Affiliation:
Obs. Midi-Pyrénées, Toulouse, France
J.-C. Bouret
Affiliation:
Laboratoire d'Astrophysique de Marseille, Marseille, France
C. Catala
Affiliation:
Laboratoire d'Astrophysique de Marseille, Marseille, France
J.-F. Donati
Affiliation:
Laboratoire d'Astrophysique de Marseille, Marseille, France
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Abstract

We report the discovery, using FORS1 at the ESO-VLT and ESPaDOnS at the Canada-France-Hawaii Telescope, of magnetic fields and chemical peculiarities in the Herbig Ae/Be stars HD 72106 and HD 101412. These stars may well represent pre-main sequence progenitors of the magnetic Ap/Bp stars. At the same time, we fail to confirm claims by Hubrig et al. (2004) of the presence of magnetic fields in the Herbig Ae star HD 139614.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 17: Element Stratification in Stars: 40 Years of Atomic Diffusion , 2005 , pp. 309 - 312
Copyright
© EAS, EDP Sciences, 2005

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