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Fig. 6


Gray-scale position-velocity (PV) echellograms of the Hα and [N ii] emission lines of NGC 6778 observed at four slits along the PA’s 15°, 24°, 47°, and 100°. Note the presence of emission from the He ii λ6560 line redward of Hα. The morphological and kinematical features of interest are labeled on different echellograms: the northern linear jet (NLJ), the southern linear jet (SLJ), the northern curved jet (NCJ), the southern curved jet (SCJ), the equatorial ring (ER), the bipolar lobes, and the north knot (N knot) and south knot (S knot). The contour levels have been selected to emphasize the different features.

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