galpy.df.streamdf.calc_stream_lb¶
-
streamdf.
calc_stream_lb
(vo=None, ro=None, R0=None, Zsun=None, vsun=None)[source]¶ NAME:
calc_stream_lbPURPOSE:
convert the stream track to observational coordinates and storeINPUT:
Coordinate transformation inputs (all default to the instance-wide values):
vo= circular velocity to normalize velocities with
ro= Galactocentric radius to normalize positions with
R0= Galactocentric radius of the Sun (kpc)
Zsun= Sun’s height above the plane (kpc)
vsun= Sun’s motion in cylindrical coordinates (vR positive away from center)
OUTPUT:
(none)HISTORY:
2013-12-02 - Written - Bovy (IAS)