Can we predict the magnetic properties of PMS stars from their H-R diagram location?

S. G. Gregory; J. -F. Donati; Julien Morin; G. A. J. Hussain; N. J. Mayne; L. A. Hillenbrand; M. Jardine

doi:10.1017/S1743921314001677

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Can we predict the magnetic properties of PMS stars from their H-R diagram location?

S. G. Gregory, J. -F. Donati, Julien Morin, G. A. J. Hussain, N. J. Mayne, L. A. Hillenbrand et M. Jardine

Magnetic Fields throughout Stellar Evolution, Vol.302

IAUS 302: Magnetic Fields throughout Stellar Evolution (Biarritz, France, 25/08/2013–30/08/2013)

07/08/2014

DOI: https://doi.org/10.1017/S1743921314001677

Résumé

Spectropolarimetric observations combined with tomographic imaging techniques have revealed that all pre-main sequence (PMS) stars host multipolar magnetic fields, ranging from strong and globally axisymmetric with ~>kilo-Gauss dipole components, to complex and non-axisymmetric with weak dipole components (<~0.1 kG). Many host dominantly octupolar large-scale fields. We argue that the large-scale magnetic properties of a PMS star are related to its location in the Hertzsprung-Russell diagram. This conference paper is a synopsis of Gregory et al. (2012), updated to include the latest results from magnetic mapping studies of PMS stars.

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Titre: Can we predict the magnetic properties of PMS stars from their H-R diagram location?
Créateurs - sans rôle: S. G. Gregory - University of St Andrews
J. -F. Donati - Centre National de la Recherche Scientifique
Julien Morin - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
G. A. J. Hussain - ESO Garching
N. J. Mayne - University of Exeter
L. A. Hillenbrand - California Institute of Technology
M. Jardine - University of St Andrews
Détails de publication: Magnetic Fields throughout Stellar Evolution, Vol.302
Colloque: IAUS 302: Magnetic Fields throughout Stellar Evolution (Biarritz, France, 25/08/2013–30/08/2013)
Identifiants: 99151173309311
Unité académique: Laboratoire Univers et Particules de Montpellier - LUPM
Langue: English
Type de ressource: Conference proceeding
Champs locaux: hal-01770047