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Table 4
Model parameters for symmetric fit with OH5 dust to IRS 3 and “two-hemisphere” fit to IRS 2.
| Parameter | IRS 2 | IRS 3 |
|
|
||
| Single gradient | Eastern side | Symmetric |
| Source luminosity | 2000 L⊙ | 1300 L⊙ |
| Dust temp at inner radius | 1400 K | 1400 K |
| Density gradient, r− p | 0.0 | 0.0 |
| Grain size distribution slope | 3.5 | 3.5 |
| Grain size M = min/max (μm) | 0.1/1.0 | 0.1/1.0 |
| Router/Rinner | 3000 | 1500 |
| A v | 30 mag | 20 mag |
| Double gradient | Western side | |
| Inner density gradient, r− p | 0.3 from Rin to 300 Rin | |
| Outer density gradient, r− p | 0.3 from 300 Rin to Rout | |
| Router/Rinner | 1500 | |
| A v | 110 mag | |
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