Table 6.
Best-fit parameter values obtained with HerBIE (non-hierarchical Bayesian framework) and derived quantities.
| Parameter | THEMIS | MBB | Units | ||
|---|---|---|---|---|---|
| Value | Range | Value | Range | ||
| Mdust | (3.2 ± 0.2)×107 | [unlimited] | (3.8 ± 0.7)×107 | [unlimited] | M⊙ |
| Tdust | ∼24.2 | [derived] | 23.7 ± 0.9 | [2.7 − 1000] | K |
| β | 1.79 | [fixed] | 1.85 ± 0.09 | [0 − 5] | |
| qAF | 15 ± 1 | [10−3 − 90] | − | % | |
| L★ | (3.8 ± 0.7)×1010 | [unlimited] | − | L⊙ | |
| ⟨U⟩ | 5.5 ± 0.9 | [derived] | − | ⟨U⟩⊙ | |
| Lradio | (7.0 ± 0.6)×104 | [unlimited] | (8 ± 1)×104 | [unlimited] | L⊙ |
| αsync | 0.87 ± 0.04 | [0.5 − 1.2] | 0.92 ± 0.09 | [0.5 − 1.2] | |
| fFF | 15 ± 12 | [0 − 100] | 30 ± 20 | [0 − 100] | % |
| DGR | 1/400 ∼ 0.0025 | [derived] | 1/345 ∼ 0.0029 | [derived] | |
| DSR | 1/1290 ∼ 0.0008 | [derived] | 1/1000 ∼ 0.001 | [derived] | |
Notes. From top to bottom, in the rows we list the dust mass, Mdust; the dust temperature, Tdust (for THEMIS, derived using Eq. (1)); the dust spectral index, β; the fraction of small dust grains (i.e. aromatic feature carriers), qAF; the NIR stellar luminosity, L★; the average ISRF, ⟨U⟩ (in units of ⟨U⟩⊙ = 2.2 × 10−5 W m−2); the radio luminosity at λ = 1 cm, Lradio; the radio spectral index, αsync; the fraction of free-free emission at λ = 1 cm, fFF; the dust-to-total gas ratio, DGR; and the dust-to-stellar mass ratio, DSR. Values in square brackets denote the adopted priors.
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