@@ -404,10 +404,30 @@ Star formation: Schaye+2008 modified for EAGLE
parameters indicated on the figure. These are the slope of the
dependency, its position on the metallicity-axis and normalisation
(black circle) as well as the maximal threshold density allowed. For
reference, the black arrow indicates the typical solar metallicity
:math:`Z_\odot=0.014`. The values used to produce this figure are the
ones assumed in the reference EAGLE model.
reference, the black arrow indicates the value typically assumed for
solar metallicity :math:`Z_\odot=0.014` (note, however, that this value
does *not* enter the model at all). The values used to produce this
figure are the ones assumed in the reference EAGLE model.
.. code:: YAML
# 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.
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.
KS_max_density_threshold_H_p_cm3: 1e5 # Hydrogen number density above which a particle gets automatically turned into a star in Hydrogen atoms per cm^3.
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.
gas_fraction: 0.1 # The gas fraction used internally by the model.
