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Table 2.
Initial parameters used in the SED-fitting analysis.
| Parameter | Symbol | Range |
|---|---|---|
| SFH (Delay-τ) | ||
| Age | Age | 10–2000 Myr |
| e-folding timescales | τ | 20–1500 Myr |
| SSP (Bruzual & Charlot 2003) | ||
| Initial mass function | IMF | Chabrier (2001) |
| Metallicity | Z | Fixed to 0.2 Z⊙ |
| Dust attenuation (Noll et al. 2009) | ||
| Color excess | E(B − V) | 0.025–1.5 |
| Slope of the power law | δ | −0.5 to 0.5 |
| UV bump at 2175 Å | Not included | |
| Dust emission (Draine & Li 2007) | ||
| Mass fraction of PAH | pPAH | Fixed to 3.9% |
| Minimum radiation field | Umin | 0.7–50 |
| Power slope dU/dM ∝ U−α | α | Fixed to 2.0 |
| Dust fraction in PDRs | γ | 0.01–0.04 |
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