EAS Publications Series
Volume 9, 2003Magnetism and Activity of the Sun and Stars
|Page(s)||297 - 297|
|Published online||17 November 2003|
J. Arnaud and N. Meunier (eds)
EAS Publications Series, 9 (2003) 297
Magnetic Winds/Jets in young low mass stars
Laboratoire d'Astrophysique de
Corresponding author: Catherine.Dougados@obs.ujf-grenoble.fr
I discuss in this contribution constraints on the origin of mass-loss from young stars brought by recent observations at high angular resolution (0.1'' = 14 AU) of the inner regions of winds from T Tauri stars. Jet widths and collimation scales, the large extent of the velocity profile as well as the detection of rotation signatures agree with predictions from magneto-centrifugal disk wind ejection models. However dynamically cold disk wind solutions predict too large terminal velocities and too low jet densities and ionisation fractions, suggesting that thermal gradients (originating in an accretion heated disk corona for example) may play an important role in accelerating the flow.
© EAS, EDP Sciences, 2003
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