Open Access
Table 2.
Fitting parameters in the CIGALE runs.
| Star-Formation History | ||
|---|---|---|
| Delayed τ+starburst | e-folding time of the main population | 1000, 3000, 5000, 8000 Myrs |
| Age the main population | 4000–13 000 (step 1000) Myrs | |
| e-folding time of the late starburst population | 9000, 13 000 Myrs | |
| Age of the late starburst population | 1, 50, 150 Myrs | |
| Mass fraction of the late starburst population | 0.01, 0.1, 0.25 | |
| Single Stellar Population | ||
| Bruzual & Charlot (2003) | IMF | Chabrier (1) |
| Metallicity | Solar (0.02) | |
| Dust attenuation | ||
| Modified starburst | Colour excess | 0.0, 0.1, 0.25, 0.4, 0.55, 0.7, 0.85, 1.0 |
| Reduction factor | 0.25, 0.5, 0.75 | |
| Slope delta of the power law modifying the attenuation curve | –0.45, –0.3, –0.2, –0.1, 0 | |
| Extinction law | Milky Way (1) | |
| Dust emission | ||
| Draine et al. (2014) | Mass fraction of PAH | 2.5 |
| Minimum radiation field | 5, 15, 25 | |
| Power-law slope α in dM/dU ∝ Uα | 2 | |
| Fraction illuminated from minimum to maximum radiation field | 0.02 | |
| X-ray | ||
| X-CIGALE X-ray | AGN photon index Γ | 1.8 |
| (Yang et al. 2020, 2022) | Power slope αox | –2.0, –1.8, –1.6, –1.4, –1.2 |
Max deviation from the  relation |
0.4 | |
| AGN X-ray angle coefficients (a1, a2) | (0.5, 0) | |
| AGN template | ||
| SKIRTOR | Average edge-on optical depth at 9.7 μm | 3, 7, 11 |
| (Stalevski et al. 2012) | Torus density radial parameter p | 1 |
| Torus density angular parameter q | 1 | |
| Angle between the equatorial plane and edge of the torus | 40° | |
| Viewing angle | 10, 30, 50, 70° | |
| AGN fraction, fAGN | 0, 0.1, 0.2, 0.3, 0.45, 0.6, 0.75, 0.9, 0.99 | |
| Restframe wavelength range where fAGN is computed | 3–30 μm | |
| Extinction law of polar dust | SMC (0) | |
| E(B-V) of polar dust | 0, 0.2, 0.4, 0.8 | |
| Temperature of polar dust | 100 | |
| Emissivity of polar dust | 1.6 | |
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