Table 3.
Standard and optimized parameters of the SAG model.
| Parameter | Description | Standard value | Optimized value |
|---|---|---|---|
| α | Star formation efficiency | 0.04026 | 0.08395 |
| ε | SNe feedback efficiency in bulge and disc | 0.32991 | 0.01257 |
| εEjec | The efficiency of ejection of gas from the hot phase | 0.02238 | 0.03722 |
| freinc | Fraction of ejected reheated cold gas that is reincorporated into the hot halo gas | 0.05554 | 0.03023 |
| PDist | Factor involved in the distance scale of perturbation to trigger disc instability | 14.5571 | 34.2456 |
| fBH | Fraction of cold gas accreted onto the central SMBH | 0.06058 | 0.14338 |
| κAGN | Efficiency of cold gas accretion onto the SMBH during gas cooling | 3.02198 × 10−5 | 2.8 × 10−4 |
| αRP | Ram pressure stripping efficiency | 5.0 | 8.02785 |
| ηSN | The number of SNe generated from the stellar population | 6.3e-3 | 0.01813 |
Notes. The standard values were obtained from the calibration of SAG on a smaller, representative volume of the MDPL2 simulation (Knebe et al. 2017). In this work, we calibrated αRP and ηSN, which were not treated as free parameters in the standard calibration, to improve the model’s agreement with the target simulation.
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