2001A&A...377..609G


Query : 2001A&A...377..609G

2001A&A...377..609G - Astronomy and Astrophysics, volume 377, 609-616 (2001/10-2)

Atomic T Tauri disk winds heated by ambipolar diffusion. II. Observatio nal tests.

GARCIA P.J.V., CABRIT S., FERREIRA J. and BINETTE L.

Abstract (from CDS):

Thermal and ionization structures of self-similar, magnetically-driven disk winds obtained in a companion paper (Garcia et al., 2001A&A...377..589G) are used to compute a series of jet synthetic observations. These include spatially resolved forbidden line emission maps, long-slit spectra, as well as line ratios. Line profiles and jet widths appear to be good tracers of the wind dynamics and collimation, whereas line ratios essentially trace gas excitation conditions. All the above diagnostics are confronted to observations of T Tauri star microjets. Convolution by the observing beam is shown to be essential for a meaningful test of the models. We find that jet widths and qualitative variations in line profiles with both distance and line tracers are well reproduced. A low-velocity [OI] component is also obtained, originating from the disk wind base. However, this component is too weak, predicted maximum velocities are too high and electronic and total densities are too low. Denser and slower magnetized winds, launched from disks with warm chromospheres, might resolve these discrepancies.

Abstract Copyright:

Journal keyword(s): ISM: jets and outflows - stars: pre-main sequence - MHD - line: profiles - accretion disks

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* DG Tau Or* 04 27 04.6921275888 +26 06 16.060169268 13.57 13.97 10.50 12.28   K6Ve 988 1
2 V* V1213 Tau Or* 04 31 37.5055489536 +18 12 24.383952396           K7 544 0
3 V* UY Aur Or* 04 51 47.3890167432 +30 47 13.551561492 12.82 12.96 11.90 10.59 9.52 M0e+M2.5e 343 0
4 V* RW Aur TT* 05 07 49.5662483 +30 24 05.177426   10.86 9.60 9.95   K1/5e+K5e 756 0
5 WRAY 16-203 Or* 16 08 29.7275063376 -39 03 11.024360496   16.26 15.91 15.38 15.69 K0: 159 1

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2022.08.10-08:11:28

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