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Table 1.
Default hydrodynamical halo model parameters.
| Parameter | Default value | Equation | Physical meaning |
|---|---|---|---|
| ϵ1 | 0 | (34) | Halo concentration modification for gas-poor haloes |
| ϵ2 | 0 | (34) | Halo concentration modification for gas-rich haloes |
| M0 | 1014 h−1 M⊙ | (25) | Halo mass below which haloes have lost more than half of their initial gas content |
| β | 0.6 | (25) | Low-mass power-law slope of halo bound gas fraction |
| Γ | 1.17 | (35) | Polytropic index for the equation of state of gas that is bound in haloes |
| A* | 0.03 | (27) | Peak fraction of halo mass that is in stars |
| M* | 1012.5 h−1 M⊙ | (27) | Halo mass of peak star-formation efficiency |
| σ* | 1.2 | (27) | Logarithmic width of star-formation efficiency distribution |
| η | −0.3 | (29) | Power-law index for central–satellite galaxy split |
| α | 1 | (39) | Ratio of halo temperature to that of virial equilibrium |
| Tw | 106.5 K | Below (40) | Temperature of the warm-hot intergalactic medium |
Notes. In the default case these are all independent of halo mass and redshift, but we allow for some redshift and mass dependence in our fitted halo models.
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