Next: The Mass of the
Up: Observations
Previous: Morphology
Kinematics
Comparison of imagery at two separate redshifts (panels and of
Figure 1) reveals a broad velocity gradient across the
quasar nebula (PA ^o). The eastern filaments are generally
less redshifted than the western filaments and represent the only gas
possibly near the systemic velocity of the quasar. The western
filaments in the ``red'' image appear to be redshifted from the
systemic velocity by a value of km s. The clear
difference between the filament morphologies in the blue and red
images - particularly in the northeast and the west - implies that
essentially all of the detected emission is redshifted relative to the
quasar. These conclusions agree well with the published spectroscopic
observations of Nørgaard-Nielsen et al. (1986). We also confirm
that the velocity structure of the extended ionized gas component does
not appear to follow the rotation curve of the quasar (Bergeron et al. 1983).
Patrick Shopbell
2000-11-28