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Table 1
DustEM parameters of the Jones et al. (2013) dust model.
| Composition | Size | Eg ( eV ) | ρ (g cm-3 ) | α | amin/amax | ac, at/a0 | γ/σ | Y | f M − tot |
| core/mantle | distribution | core/mantle | core/mantle | (nm) | (nm) | (M/MH) | |||
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| a-C:H/a-C | power-law | 2.5/0.1 | 1.3/1.6 | 5.0 | 0.4/4900 | 50, 10/− | 1.0/− | 1.6 × 10-3 | 18.6% |
| a-C:H/a-C | log-normal | 2.5/0.1 | 1.3/1.6 | − | 0.5/4900 | −, −/7.0 | −/1.0 | 0.6 × 10-3 | 7.0% |
| a-SilFe/a-C | log-normal | ~ 8/0.1 | 2.5/1.6 | − | 1.0/4900 | −, −/8.0 | −/1.0 | 5.8 × 10-3 | 67.4% |
| −/a-C | mantle | −/0.1 | −/1.6 | − | d = 5 nm | −, −/− | −/− | 0.6 × 10-3 | 7.0% |
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| Total | 8.6 × 10-3 | ||||||||
Notes. Eg and ρ are the band gap and the density of the material. The power-law distribution is defined as dn/ da ∝ aα and an exponential decay is applied by multiplying it by exp(−[(a − at) /ac] γ) for a>at, while the log-normal distribution is defined as 
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