comoving_softening:0.01# Comoving softening length (in internal units).
max_physical_softening:0.01# Physical softening length (in internal units).
# Parameters governing the time integration (Set dt_min and dt_max to the same value for a fixed time-step run.)
TimeIntegration:
time_begin:0.# The starting time of the simulation (in internal units).
time_end:0.1# The end time of the simulation (in internal units).
dt_min:1e-9# The minimal time-step size of the simulation (in internal units).
dt_max:1e-2# The maximal time-step size of the simulation (in internal units).
# Parameters governing the snapshots
Snapshots:
basename:output# Common part of the name of output files
time_first:0.# (Optional) Time of the first output if non-cosmological time-integration (in internal units)
delta_time:0.001# Time difference between consecutive outputs (in internal units)
# Parameters governing the conserved quantities statistics
Statistics:
delta_time:1e-2# Time between statistics output
time_first:0.# (Optional) Time of the first stats output if non-cosmological time-integration (in internal units)
# Parameters related to the initial conditions
InitialConditions:
file_name:fid.hdf5# The file to read
periodic:0# Are we running with periodic ICs?
# Parameters for the hydrodynamics scheme
SPH:
resolution_eta:1.2348# Target smoothing length in units of the mean inter-particle separation (1.2348 == 48Ngbs with the cubic spline kernel).
CFL_condition:0.1# Courant-Friedrich-Levy condition for time integration.
h_tolerance:1e-4# (Optional) Relative accuracy of the Netwon-Raphson scheme for the smoothing lengths.
h_max:10.# (Optional) Maximal allowed smoothing length in internal units. Defaults to FLT_MAX if unspecified.
max_volume_change:1.4# (Optional) Maximal allowed change of kernel volume over one time-step.
max_ghost_iterations:30# (Optional) Maximal number of iterations allowed to converge towards the smoothing length.
minimal_temperature:100# (Optional) Minimal temperature (in internal units) allowed for the gas particles. Value is ignored if set to 0.
H_ionization_temperature:1e4# (Optional) Temperature of the transition from neutral to ionized Hydrogen for primoridal gas.
EAGLECooling:
dir_name:./coolingtables/# Location of the Wiersma+08 cooling tables
H_reion_z:11.5# Redshift of Hydrogen re-ionization
He_reion_z_centre:3.5# Redshift of the centre of the Helium re-ionization Gaussian
He_reion_z_sigma:0.5# Spread in redshift of the Helium re-ionization Gaussian
He_reion_eV_p_H:2.0# Energy inject by Helium re-ionization in electron-volt per Hydrogen atom
# Primordial abundances
EAGLEChemistry:
init_abundance_metal:0.0129# Inital fraction of particle mass in *all* metals
init_abundance_Hydrogen:0.7065# Inital fraction of particle mass in Hydrogen
init_abundance_Helium:0.2806# Inital fraction of particle mass in Helium
init_abundance_Carbon:0.00207# Inital fraction of particle mass in Carbon
init_abundance_Nitrogen:0.000836# Inital fraction of particle mass in Nitrogen
init_abundance_Oxygen:0.00549# Inital fraction of particle mass in Oxygen
init_abundance_Neon:0.00141# Inital fraction of particle mass in Neon
init_abundance_Magnesium:0.000591# Inital fraction of particle mass in Magnesium
init_abundance_Silicon:0.000683# Inital fraction of particle mass in Silicon
init_abundance_Iron:0.0011# Inital fraction of particle mass in Iron
# Hernquist potential parameters
HernquistPotential:
useabspos:0# 0 -> positions based on centre, 1 -> absolute positions
position:[0.,0.,0.]# Location of centre of isothermal potential with respect to centre of the box (if 0) otherwise absolute (if 1) (internal units)
idealizeddisk:1# Run with an idealized galaxy disk
M200:137.0# M200 of the galaxy disk
h:0.704# reduced Hubble constant (value does not specify the used units!)
concentration:9.0# concentration of the Halo
diskfraction:0.040# Disk mass fraction
bulgefraction:0.014# Bulge mass fraction
timestep_mult:0.01# Dimensionless pre-factor for the time-step condition, basically determines the fraction of the orbital time we use to do the time integration
epsilon:0.01# Softening size (internal units)
# EAGLE star formation parameters
EAGLEStarFormation:
EOS_density_norm_H_p_cm3:0.1# Physical density used for the normalisation of the EOS assumed for the star-forming gas in Hydrogen atoms per cm^3.
EOS_temperature_norm_K:8000# Temperature om the polytropic EOS assumed for star-forming gas at the density normalisation in Kelvin.
EOS_gamma_effective:1.3333333# Slope the of the polytropic EOS assumed for the star-forming gas.
gas_fraction:0.3# The gas fraction used internally by the model.
KS_normalisation:1.515e-4# The normalization of the Kennicutt-Schmidt law in Msun / kpc^2 / yr.
KS_exponent:1.4# The exponent of the Kennicutt-Schmidt law.
KS_min_over_density:57.7# The over-density above which star-formation is allowed.
KS_high_density_threshold_H_p_cm3:1e3# Hydrogen number density above which the Kennicut-Schmidt law changes slope in Hydrogen atoms per cm^3.
KS_high_density_exponent:2.0# Slope of the Kennicut-Schmidt law above the high-density threshold.
KS_temperature_margin_dex:0.5# Logarithm base 10 of the maximal temperature difference above the EOS allowed to form stars.
threshold_norm_H_p_cm3:0.1# Normalisation of the metal-dependant density threshold for star formation in Hydrogen atoms per cm^3.
threshold_Z0:0.002# Reference metallicity (metal mass fraction) for the metal-dependant threshold for star formation.
threshold_slope:-0.64# Slope of the metal-dependant star formation threshold
threshold_max_density_H_p_cm3:10.0# Maximal density of the metal-dependant density threshold for star formation in Hydrogen atoms per cm^3.
# Parameters for the EAGLE "equation of state"
EAGLEEntropyFloor:
Jeans_density_threshold_H_p_cm3:0.1# Physical density above which the EAGLE Jeans limiter entropy floor kicks in expressed in Hydrogen atoms per cm^3.
Jeans_over_density_threshold:10.# Overdensity above which the EAGLE Jeans limiter entropy floor can kick in.
Jeans_temperature_norm_K:8000# Temperature of the EAGLE Jeans limiter entropy floor at the density threshold expressed in Kelvin.
Jeans_gamma_effective:1.3333333# Slope the of the EAGLE Jeans limiter entropy floor
Cool_density_threshold_H_p_cm3:1e-5# Physical density above which the EAGLE Cool limiter entropy floor kicks in expressed in Hydrogen atoms per cm^3.
Cool_over_density_threshold:10.# Overdensity above which the EAGLE Cool limiter entropy floor can kick in.
Cool_temperature_norm_K:8000# Temperature of the EAGLE Cool limiter entropy floor at the density threshold expressed in Kelvin.
Cool_gamma_effective:1.# Slope the of the EAGLE Cool limiter entropy floor
