galpy.potential.dvcircdR¶
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galpy.potential.
dvcircdR
(Pot, R)¶ NAME:
dvcircdRPURPOSE:
calculate the derivative of the circular velocity wrt R at R in potential PotINPUT:
Pot - Potential instance or list of such instances
R - Galactocentric radius
OUTPUT:
derivative of the circular rotation velocity wrt RHISTORY:
2013-01-08 - Written - Bovy (IAS)