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The accretion-ejection connexion in T Tauri stars: jet models vs. observations

Published online by Cambridge University Press:  01 May 2007

S. Cabrit
S. Cabrit*
Affiliation:
LERMA, Observatoire de Paris, UPMC, CNRS, 61 Av. de l'Observatoire, 75014 Paris, France email: Sylvie.Cabrit@obspm.fr
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Abstract

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Key observational constraints for jet models in T Tauri stars are outlined, including the jet collimation scale, kinematic structure, and ejection/accretion ratio. It is shown that MHD self-collimation is most likely required. The four possible MHD ejection sites (stellar surface, inner disk edge, extended disk region, magnetosphere-disk reconnexion line) are then critically examined against observational constraints, and open issues are discussed.

Keywords

Hydrodynamicsstars: pre–main-sequencestars: windsoutflowsISM: jets and outflows

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