galpy.util.bovy_coords.rectgal_to_sphergal¶
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galpy.util.bovy_coords.
rectgal_to_sphergal
(X, Y, Z, vx, vy, vz, degree=False)¶ NAME:
rectgal_to_sphergalPURPOSE:
transform phase-space coordinates in rectangular Galactic coordinates to spherical Galactic coordinates (can take vector inputs)INPUT:
X - component towards the Galactic Center (kpc)
Y - component in the direction of Galactic rotation (kpc)
Z - component towards the North Galactic Pole (kpc)
vx - velocity towards the Galactic Center (km/s)
vy - velocity in the direction of Galactic rotation (km/s)
vz - velocity towards the North Galactic Pole (km/s)
degree - (Bool) if True, return l and b in degrees
OUTPUT:
(l,b,d,vr,pmll x cos(b),pmbb) in (rad,rad,kpc,km/s,mas/yr,mas/yr)HISTORY:
2009-10-25 - Written - Bovy (NYU)