Abstract
Following the work of (Garcia et al., 2001a) (GFCB), we compute the thermal properties and ionization structure of magnetically-driven disk winds. The original model’s dominant heating function along the jet, ambipolar diffusion, is augmented by a mechanical heating term supposed to arise from weak shocks, as used by (Shang et al., 2002). We add this mechanical heating function to a cold disk wind model and calculate its effect on the jet as a whole. The temperature and ionization of the flow are calculated in the case of cold jet solutions consistent with the underlying accretion disk (Ferreira, 1997). These solutions are compared to those of (GFCB) in order to quantitatively determine the effect of the mechanical heating on the flow. We then use the computed thermal and ionization structures to calculate jet synthetic observations. We find that the addition of mechanical heating leads to higher electron fractions, in turn leading to increased line fluxes and line ratios approaching observed values.
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References
Binette, L., Dopita, M.A. and Tuohy, I.R.: 1985, ApJ 297, 476.
Blandford, R.D. and Payne, D.G.: 1982, MNRAS 199, 883.
Cabrit, S., Edwards, S., Strom, S.E. and Strom, K.M.: 1990, ApJ 354, 687.
Cabrit, S., Ferreira, J. and Raga, A.C.: 1999, A&A 343, L61.
Casse, F. and Ferreira, J.: 2000, 353, 1115.
Cohen, M., Emerson, J.P. and Beichman, C.A.: 1989, ApJ 339, 455.
Draine, B.T. and Lee, H.M.: 1984, ApJ 285, 89.
Ferreira, J.: 1997, A&A 319, 340.
Ferreira, J. and Pelletier, G.: 1995, A&A 295, 807.
Garcia, P.J.V., Ferreira, J., Cabrit, S. and Binette, L.:2001a, A&A 377, 589 (GFCB).
Garcia, P.J.V., Cabrit, S., Ferreira, J. and Binette, L.: 2001b, A&A 37, 609.
Hartigan, P., Edwards, S. and Ghandour, L.: 1995, ApJ 452, 736.
Konigl, A. and Pudritz, R.E.: 2000, PP IV, p. 759.
Lavalley-Fouquet, C., Cabrit, S. and Dougados, C.: 2000, A&A 356, L41.
Safier,P.N.: 1993a, ApJ 408, 115.
Safier,P.N.: 1993b, ApJ 408, 148.
Savage, B.D. and Sembach, K.R.: 1996, ARA&A 34, 279.
Shang, H., Glassgold, A.E., Shu, F.H. and Lizano, S.: 2002, ApJ 564, 835.
Shu, F.H., Najita, J., Ostriker, E.C. and Shang, H.: 1995, ApJ 455, L155.
Spitzer, L.: 1978, New York, Wiley-Interscience.
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O’Brien, D., Garcia, P., Ferreira, J., Cabrit, S., Binette, L. (2003). Mechanical Heating in Disk-Driven Winds — Thermal Structure & Observational Predictions. In: Fernandes, A.J.L., Garcia, P.J.V., Lima, J.J.G. (eds) Jets in Young Stellar Objects. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0999-7_20
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DOI: https://doi.org/10.1007/978-94-007-0999-7_20
Publisher Name: Springer, Dordrecht
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