DF (galpy.df
)¶
Two-dimensional, axisymmetric disk distribution functions¶
Distribution function for orbits in the plane of a galactic disk.
Two-dimensional, non-axisymmetric disk distribution functions¶
Distribution function for orbits in the plane of a galactic disk in
non-axisymmetric potentials. These are calculated using the technique
of Dehnen 2000,
where the DF at the current time is obtained as the evolution of an
initially-axisymmetric DF at time to
in the non-axisymmetric
potential until the current time.
Three-dimensional disk distribution functions¶
Distribution functions for orbits in galactic disks, including the vertical motion for stars reaching large heights above the plane. Currently only the quasi-isothermal DF.
General instance routines¶
Specific distribution functions¶
The distribution function of a tidal stream¶
From Bovy 2014; see Dynamical modeling of tidal streams.
General instance routines¶
- __call__
- __init__
- calc_stream_lb
- callMarg
- density_par
- estimateTdisrupt
- find_closest_trackpoint
- find_closest_trackpointLB
- freqEigvalRatio
- gaussApprox
- length
- meanangledAngle
- meanOmega
- meantdAngle
- misalignment
- pangledAngle
- plotCompareTrackAAModel
- plotProgenitor
- plotTrack
- pOparapar
- ptdAngle
- sample
- sigangledAngle
- sigOmega
- sigtdAngle
- subhalo_encounters
The distribution function of a gap in a tidal stream¶
From Sanders, Bovy, & Erkal 2015;
see NEW in v1.2: Modeling gaps in streams. Implemented as a subclass of
streamdf
. No full implementation is available currently, but the
model can be set up and sampled as in the above paper.