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Table 2
Summary of the parameters used in POLARIS for all the models described in Table 1.
| Quantity | Symbol | Value |
|---|---|---|
| Radiation sources | ||
| Central source luminosity | Lstar | 1 L⊙ |
| Central source radius | Rstar | 1 R⊙ |
| Photon packages per λ | Nph,star | 500 000 |
| External radiation field | G0 | 1 (Mathis et al. 1983) |
| Photon packages per λ | Nph,ISRF | 10 000 |
| Synthetic observation parameters | ||
| Distance to observer | D | 250 pc |
| Wavelengths | λ | 0.8, 1.3, 3.0 mm |
| Map size | Lmap | 8000 au |
| Resolution | dx | 5 au |
| Dust parameters | ||
| Gas to dust ratio | ρg/ρd | 100 |
| Minimum grain size | amin | 5 nm |
| Maximum grain size | amax | 20 μm |
| Aspect ratio | є | 0.5 (oblate) |
| Power-law index (a) | α | −3.5 |
| Astronomical silicates | fsil | 62.5% |
| Graphite | fgraph | 37.5% |
| Suprathermal dust(b) | fhigh−J | 0.25 |
Notes. (a)Power-law index of the size distribution dn(a) ∝ aα (Mathis et al. 1977), (b)Fraction of dust grains spinning suprathermally.
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