Open Access
Fig. 15
Coefficients 
(left) and 
(right) calculated for adjacent pixels using the rotation curve above. Units are
meter s−1 pc−1
and the color wedges are shown at the top of each panel. In the left panel, contours are drawn at 0, 10, and 20
m s−1 pc−1
and in the right panel at −10,
−20,
and −30
m s−1 pc−1.
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