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

, , , , , , and .
(Sep 29, 2013)

Abstract

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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