# dissolved_fardal_stream¶

gala.dynamics.mockstream.dissolved_fardal_stream(hamiltonian, prog_orbit, prog_mass, t_disrupt, release_every=1, Integrator=<class 'gala.integrate.pyintegrators.dopri853.DOPRI853Integrator'>, Integrator_kwargs={}, snapshot_filename=None, seed=None)[source]

Generate a mock stellar stream in the specified potential with a progenitor system that ends up at the specified position.

This uses the prescription from Fardal et al. (2015), but at a specified time the progenitor completely dissolves and the radial offset of the tidal radius is reduced to 0 at fixed dispersion.

Parameters: hamiltonian : Hamiltonian The system Hamiltonian. prog_orbit : Orbit The orbit of the progenitor system. prog_mass : numeric, array_like A single mass or an array of masses if the progenitor mass evolves with time. t_disrupt : numeric The time that the progenitor completely disrupts. release_every : int (optional) Release particles at the Lagrange points every X timesteps. Integrator : Integrator (optional) Integrator to use. Integrator_kwargs : dict (optional) Any extra keyword argumets to pass to the integrator function. snapshot_filename : str (optional) Filename to save all incremental snapshots of particle positions and velocities. Warning: this can make very large files if you are not careful! seed : int (optional) A random number seed for initializing the particle positions. stream : PhaseSpacePosition