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Table 1

Velocity gradients of Oph D measured from the NH3(1, 1) lines.

Sourcea Θb
[km s-1 pc-1] [°]

N 6.71  ±  0.01 178.7  ±  0.4
S 2.10  ±  0.06 55.8  ±  1.5



The northern peak is indicated with N, and southern with S.


Direction of increasing velocity measured west of north.

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