Fig. 4
Position velocity diagrams and line profiles of various lines in the ESO-Hα 574 jet made from UVES spectra taken in 2006. All velocities are systemic. Knots A1, A, and some of knots B and E are included in the data. Knots A1 and A are not resolved. Note that due to a difference of ~3.3 yrs between this data and the X-Shooter data the knots here are closer to the source positions than in Fig. 2. Using the tangential velocities given in Table 1, we calculate that knots A, B, and E will have shifted by 0.̋6, 0.̋95, and 1.̋4, respectively. The [S II]λ6731 and [N II]λ6583 lines regions have a blue-shifted wing which increases in velocity with distance from the source. In contrast to the Hα line region in the X-Shooter spectra the Hα line here has a more pronounced red-wing. For comparison the X-Shooter Hα line is over-plotted on the UVES profile as a dashed line. The [O I]λ6300 line region is slightly distorted from the subtraction of the [O I] sky line.
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