synthpop.modules.kinematics.kinematics_from_grid

Kinematic module that interpolates values from a grid

Classes

KinematicsFromGrid

Grid interpolation kinematic module

Module Contents

class synthpop.modules.kinematics.kinematics_from_grid.KinematicsFromGrid(moment_file=None, sun=None, **kwargs)

Bases: synthpop.modules.kinematics._kinematics.Kinematics

Grid interpolation kinematic module

Attributes

kinematics_func_namestr

name of the Kinematics Class

moment_filestr

name of a file containing a grid of kinematic information required columns are: r, z, v_phi, sigma_phi, signa_r, sigma_z units must be kpc for distance, and km/s for velocity file must be whitespace delimited and have comments marked with ‘#’

interpolate_v_phi

interpolate_sigma_phi

interpolate_sigma_r

interpolate_sigma_z

kinematics_func_name = 'kinematics_from_grid'

sun

draw_random_velocity(x: np.ndarray or float, y: np.ndarray or float, z: np.ndarray or float, **kwargs) → Tuple[numpy.ndarray, numpy.ndarray, numpy.ndarray]

Generate a random velocities u,v,w by using a velocity dispersion

Parameters

x, y, znparray, float [kpc]

galactocentric coordinates

Returns

u, v, wndarray [km/s]

velocity in galactocentric x,y,and z direction.