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- W1520457972 abstract "We summarize results on the thermal and ionization structure of self-similar, magnetically-driven, atomic disk winds heated by ambipolar diffusion. We improve upon earlier work by Safier by considering (1) new MHD solutions consistent with underlying cold keplerian disk equilibrium, (2) a more accurate treatment of the micro-physics, and (3) predictions for spatially resolved forbidden line emission (maps, long-slit spectra). The temperature plateau ≃ 10 4 K found earlier is recovered, but ionization fractions are revised downward by a factor of 10, due to previous omission of thermal speeds in ion-neutral momentum-exchange rates. The physical origin of the temperature plateau is outlined. Predictions are then compared with T Tauri star observations, with emphasis on the necessity of suitable beam convolution. Jet widths and variations in line profiles with distance and line tracer are well reproduced. However, predicted maximum velocities are too high, total densities too low, and the low-velocity [O i] component is too weak. Denser, slower MHD winds from warm disks might resolve these discrepancies." @default.
- W1520457972 created "2016-06-24" @default.
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- W1520457972 date "2002-06-01" @default.
- W1520457972 modified "2023-09-24" @default.
- W1520457972 title "Atomic t tauri disk winds heated by ambipolar diffusion" @default.
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