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Magnetism, rotation and accretion in Herbig Ae-Be stars

Published online by Cambridge University Press:  01 May 2007

E. Alecian ,
G.A. Wade ,
C. Catala ,
C. Folsom ,
J. Grunhut ,
J.-F. Donati ,
P. Petit ,
S. Bagnulo ,
T. Boehm  and
J.-C. Bouret
...Show all authors
E. Alecian
Affiliation:
Dept. of Physics, Royal Military College of Canada email: evelyne.alecian@rmc.ca Observatoire de Paris, LESIA, France
G.A. Wade
Affiliation:
Dept. of Physics, Royal Military College of Canada email: evelyne.alecian@rmc.ca
C. Catala
Affiliation:
Observatoire de Paris, LESIA, France
C. Folsom
Affiliation:
Dept. of Physics, Royal Military College of Canada email: evelyne.alecian@rmc.ca
J. Grunhut
Affiliation:
Dept. of Physics, Royal Military College of Canada email: evelyne.alecian@rmc.ca
J.-F. Donati
Affiliation:
Laboratoire d'Astrophysique, Observatoire Midi-Pyrénées, France
P. Petit
Affiliation:
Laboratoire d'Astrophysique, Observatoire Midi-Pyrénées, France
S. Bagnulo
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile
T. Boehm
Affiliation:
Laboratoire d'Astrophysique, Observatoire Midi-Pyrénées, France
J.-C. Bouret
Affiliation:
Laboratoire d'Astrophysique de Marseille, France
J.D. Landstreet
Affiliation:
Dept. of Physics & Astronomy, University of Western Ontario, Canada
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Abstract

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Studies of stellar magnetism at the pre-main sequence phase can provide important new insights into the detailed physics of the late stages of star formation, and into the observed properties of main sequence stars. This is especially true at intermediate stellar masses, where magnetic fields are strong and globally organised, and therefore most amenable to direct study. This talk reviews recent high-precision ESPaDOnS observations of pre-main sequence Herbig Ae-Be stars, which are yielding qualitatively new information about intermediate-mass stars: the origin and evolution of their magnetic fields, the role of magnetic fields in generating their spectroscopic activity and in mediating accretion in their late formative stages, and the factors influencing their rotational angular momentum.

Keywords

Stars: pre-main sequencestars: magnetismstars: rotationstars: accretion
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S243: Star-Disk Interaction in Young Stars , May 2007 , pp. 43 - 50
Copyright
Copyright © International Astronomical Union 2007

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