"""
Rockstar-specific fields
"""
#-----------------------------------------------------------------------------
# Copyright (c) 2013, yt Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
import numpy as np
from yt.funcs import mylog
from yt.fields.field_info_container import \
FieldInfoContainer
from yt.units.yt_array import \
YTArray
from yt.utilities.physical_constants import \
mh, \
mass_sun_cgs
m_units = "Msun / h" # Msun / h
p_units = "Mpccm / h" # Mpc / h comoving
v_units = "km / s" # km /s phys, peculiar
r_units = "kpccm / h" # kpc / h comoving
[docs]class RockstarFieldInfo(FieldInfoContainer):
known_other_fields = (
)
known_particle_fields = (
("particle_identifier", ("", [], None)),
("particle_position_x", (p_units, [], None)),
("particle_position_y", (p_units, [], None)),
("particle_position_z", (p_units, [], None)),
("particle_velocity_x", (v_units, [], None)),
("particle_velocity_y", (v_units, [], None)),
("particle_velocity_z", (v_units, [], None)),
("particle_corevel_x", (v_units, [], None)),
("particle_corevel_y", (v_units, [], None)),
("particle_corevel_z", (v_units, [], None)),
("particle_bulkvel_x", (v_units, [], None)),
("particle_bulkvel_y", (v_units, [], None)),
("particle_bulkvel_z", (v_units, [], None)),
("particle_mass", (m_units, [], "Mass")),
("virial_radius", (r_units, [], "Radius")),
("child_r", (r_units, [], None)),
("vmax_r", (v_units, [], None)),
# These fields I don't have good definitions for yet.
('mgrav', ("", [], None)),
('vmax', (v_units, [], "V_{max}")),
('rvmax', (v_units, [], None)),
('rs', (r_units, [], "R_s")),
('klypin_rs', (r_units, [], "Klypin R_s")),
('vrms', (v_units, [], "V_{rms}")),
('Jx', ("", [], "J_x")),
('Jy', ("", [], "J_y")),
('Jz', ("", [], "J_z")),
('energy', ("", [], None)),
('spin', ("", [], "Spin Parameter")),
('alt_m1', (m_units, [], None)),
('alt_m2', (m_units, [], None)),
('alt_m3', (m_units, [], None)),
('alt_m4', (m_units, [], None)),
('Xoff', ("", [], None)),
('Voff', ("", [], None)),
('b_to_a', ("", [], "Ellipsoidal b to a")),
('c_to_a', ("", [], "Ellipsoidal c to a")),
('Ax', ("", [], "A_x")),
('Ay', ("", [], "A_y")),
('Az', ("", [], "A_z")),
('b_to_a2', ("", [], None)),
('c_to_a2', ("", [], None)),
('A2x', ("", [], "A2_x")),
('A2y', ("", [], "A2_y")),
('A2z', ("", [], "A2_z")),
('bullock_spin', ("", [], "Bullock Spin Parameter")),
('kin_to_pot', ("", [], "Kinetic to Potential")),
('m_pe_b', ("", [], None)),
('m_pe_d', ("", [], None)),
('num_p', ("", [], "Number of Particles")),
('num_child_particles', ("", [], "Number of Child Particles")),
('p_start', ("", [], None)),
('desc', ("", [], None)),
('flags', ("", [], None)),
('n_core', ("", [], None)),
('min_pos_err', ("", [], None)),
('min_vel_err', ("", [], None)),
('min_bulkvel_err', ("", [], None)),
)