galpy.util.coords.galcenrect_to_XYZ¶
- galpy.util.coords.galcenrect_to_XYZ(X, Y, Z, Xsun=1.0, Zsun=0.0, _extra_rot=True)[source]¶
NAME:
galcenrect_to_XYZ
PURPOSE:
transform rectangular Galactocentric to XYZ coordinates (wrt Sun) coordinates
INPUT:
X, Y, Z - Galactocentric rectangular coordinates
Xsun - cylindrical distance to the GC (can be array of same length as X)
Zsun - Sun’s height above the midplane (can be array of same length as X)
_extra_rot= (True) if True, perform an extra tiny rotation to align the Galactocentric coordinate frame with astropy’s definition
OUTPUT:
(X, Y, Z)
HISTORY:
2011-02-23 - Written - Bovy (NYU)
2016-05-12 - Edited to properly take into account the Sun’s vertical position; dropped Ysun keyword - Bovy (UofT)
2017-10-24 - Allowed Xsun/Zsun to be arrays - Bovy (UofT)
2018-04-18 - Tweaked to be consistent with astropy’s Galactocentric frame - Bovy (UofT)