galpy.df.streamdf.length

streamdf.length(threshold=0.2, phys=False, ang=False, tdisrupt=None, **kwargs)[source]

Calculate the length of the stream.

Parameters:

  • threshold (float, optional) – Threshold down from the density near the progenitor at which to define the ‘end’ of the stream. Default is 0.2.

  • phys (bool, optional) – If True, return the length in physical kpc. Default is False.

  • ang (bool, optional) – If True, return the length in sky angular arc length in degree. Default is False.

  • tdisrupt (float, optional) – Time since disruption in natural units. Default is None.

Returns:

Length (rad for parallel angle; kpc for physical length; deg for sky arc length).

Return type:

float

Notes

  • 2015-12-22 - Written - Bovy (UofT)