galpy.util.bovy_conversion.dens_in_criticaldens¶
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galpy.util.bovy_conversion.
dens_in_criticaldens
(vo, ro, H=70.0)¶ NAME:
dens_in_criticaldensPURPOSE:
convert density to units of the critical densityINPUT:
vo - velocity unit in km/s
ro - length unit in kpc
H= (default: 70) Hubble constant in km/s/Mpc
OUTPUT:
conversion from units where vo=1. at ro=1. to units of the critical densityHISTORY:
2014-01-28 - Written - Bovy (IAS)