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Table 2.
CIGALE modules and input parameters used for the SED fitting process as presented in Boquien et al. (2019).
| Parameter | Symbol | Range |
|---|---|---|
| Delayed star formation history and recent burst | ||
| e-folding time of main stellar population (Myr) | τmain | 1000.0, 3000.0, 4000.0 |
| Age of main stellar population (Myr) | agemain | 2000.0, 2500.0, 3500.0, 4000.0 |
| Age of the late burst (Myr) | ageburst | 10.0, 40.0, 70.0 |
| Mass fraction of the late burst population | fburst | 0.0, 0.001, 0.05, 0.1, 0.15 |
| Stellar populations | ||
| Stellar population synthesis models from Bruzual & Charlot (2003) | ||
| Initial mass function | IMF | Chabrier |
| Metallicity | Zstar | 0.02 |
| Nebular emission | ||
| Ionization parameter | logU | −4.0, −3.5, −3.0, −2.5, −2.0, −1.5, −1.0 |
| Gas metallicity | Zgas | 0.008, 0.006, 0.01, 0.02, 0.03, 0.04, 0.05 |
| Dust attenuation | ||
| Templates based on values adopted by Charlot & Fall (2000), Buat et al. (2018) | ||
| ISM attenuation in the V-band (mag) |  |
0.0, 0.3, 0.5, 0.7, 0.9, 1.1, 1.3, 1.5, 1.7, 1.9 |
 /( ) |
μ | 0.1, 0.3, 0.5, 0.7, 1.0 |
| Slope of the attenuation in the ISM | nISM | −0.7 |
| Slope of the attenuation in the BC | nBC | −0.7 |
| Dust emission | ||
| Templates based on average values following Małek et al. (2018) and references therein | ||
| Mass fraction of PAH | qPAH | 0.47, 1.12, 1.77, 2.5 |
| Minimum radiation field | Umin | 5.0, 10.0, 25.0 |
| Powerlaw slope dU/dM ∝ Uα | α | 2.0 |
| Fraction illuminated from Umin to Umax | γ | 0.02 |
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