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Article Dans Une Revue Astrophysics and Space Science Année : 2004

The Origin of Jets from Young Stars: Steady State Disk Wind Models Confronted to Observations

Résumé

We 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 extended ( R e >= 1 AU) magneto-centrifugal disk wind ejection models. Detected poloidal and toroidal velocities imply large ejection efficiencies (xi ~= 0.05, lambda ~= 10), suggesting that thermal gradients (originating in an accretion heated disk corona for example) play an important role in accelerating the flow.

Dates et versions

hal-03742744 , version 1 (02-08-2022)

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Citer

Catherine Dougados, Sylvie Cabrit, Jonathan Ferreira, Nicholas Pesenti, Paulo García, et al.. The Origin of Jets from Young Stars: Steady State Disk Wind Models Confronted to Observations. Astrophysics and Space Science, 2004, 293, pp.45-52. ⟨10.1023/B:ASTR.0000044651.96542.23⟩. ⟨hal-03742744⟩
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