# Define the system of units to use internally. InternalUnitSystem: UnitMass_in_cgs: 1.9891E43 # 10^10 solar masses UnitLength_in_cgs: 3.08567758E21 # 1 kpc UnitVelocity_in_cgs: 1E5 # km/s UnitCurrent_in_cgs: 1 # Amperes UnitTemp_in_cgs: 1 # Kelvin # Parameters for the self-gravity scheme Gravity: eta: 0.025 # Constant dimensionless multiplier for time integration. MAC: geometric theta_cr: 0.7 # Opening angle (Multipole acceptance criterion). use_tree_below_softening: 1 max_physical_DM_softening: 0.2 # Physical softening length (in internal units). max_physical_baryon_softening: 0.2 # 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: 0.001023 # Time difference between consecutive outputs (in internal units) 0.001023 TU = 1 Myr compression: 4 # Compress the snapshots recording_triggers_part: [-1, -1] # Not recording as we have many snapshots recording_triggers_bpart: [-1, -1] # Not recording as we have many snapshots # 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? stars_smoothing_length: 0.5 # 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_min_ratio: 0.1 # Minimal smoothing in units of softening. h_max: 10. minimal_temperature: 10. # Kelvin # Parameters for the stars Stars: overwrite_birth_time: 1 # Make sure the stars in the ICs do not do any feedback birth_time: -1. # by setting all of their birth times to -1 timestep_age_threshold_Myr: 10. # Age at which stars switch from young to old (in Mega-years). max_timestep_young_Myr: 0.1 # Maximal time-step length of young stars (in Mega-years). max_timestep_old_Myr: 1.0 # Maximal time-step length of old stars (in Mega-years). luminosity_filename: ./photometry # Standard EAGLE cooling options EAGLECooling: dir_name: ./coolingtables/ # Location of the Wiersma+09 cooling tables H_reion_z: 11.5 # Redshift of Hydrogen re-ionization H_reion_eV_p_H: 2.0 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 # PS2020 cooling parameters PS2020Cooling: dir_name: ./UV_dust1_CR1_G1_shield1.hdf5 # Location of the Ploeckinger+20 cooling tables H_reion_z: 7.5 # Redshift of Hydrogen re-ionization (Planck 2018) H_reion_eV_p_H: 2.0 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 delta_logTEOS_subgrid_properties: 0.3 # delta log T above the EOS below which the subgrid properties use Teq assumption rapid_cooling_threshold: 0.333333 # Switch to rapid cooling regime for dt / t_cool above this threshold. # Solar 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: 0.2 # Softening size (internal units) # EAGLE star formation parameters EAGLEStarFormation: SF_threshold: Zdep # Zdep (Schaye 2004) or Subgrid SF_model: PressureLaw # PressureLaw (Schaye et al. 2008) or SchmidtLaw 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. min_over_density: 100.0 # 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. EOS_entropy_margin_dex: 0.3 # When using Z-based SF threshold, logarithm base 10 of the maximal entropy above the EOS at which stars can form. threshold_norm_H_p_cm3: 0.1 # When using Z-based SF threshold, normalisation of the metal-dependant density threshold for star formation in Hydrogen atoms per cm^3. threshold_Z0: 0.002 # When using Z-based SF threshold, reference metallicity (metal mass fraction) for the metal-dependant threshold for star formation. threshold_slope: -0.64 # When using Z-based SF threshold, slope of the metal-dependant star formation threshold threshold_max_density_H_p_cm3: 10.0 # When using Z-based SF threshold, maximal density of the metal-dependant density threshold for star formation in Hydrogen atoms per cm^3. threshold_temperature1_K: 1000 # When using subgrid-based SF threshold, subgrid temperature below which gas is star-forming. threshold_temperature2_K: 31622 # When using subgrid-based SF threshold, subgrid temperature below which gas is star-forming if also above the density limit. threshold_number_density_H_p_cm3: 10 # When using subgrid-based SF threshold, subgrid number density above which gas is star-forming if also below the second temperature limit. # Parameters for the EAGLE "equation of state" EAGLEEntropyFloor: Jeans_density_threshold_H_p_cm3: 1e-4 # 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: 800 # 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: 10. # Temperature of the EAGLE Cool limiter entropy floor at the density threshold expressed in Kelvin. (NOTE: This is below the min T and hence this floor does nothing) Cool_gamma_effective: 1. # Slope the of the EAGLE Cool limiter entropy floor