Table 1
Comparison of peak 250 μm optical depths estimated with different analysis methods.
| Case | Beam [″] | β | τmax(250 μm) [10−3] | Rel. error [%] |
|---|---|---|---|---|
| true | 6 | – | 1.49 | 0.00 |
| MBB | 6 | 1.8 | 1.11 | −25.77 |
| MBB | 24 | 1.8 | 1.04 | −29.99 |
| HR | 18 | 1.8 | 1.04 | −30.34 |
| HR | 18 | 2.0 | 1.33 | −10.48 |
| HR | 18 | 2.2 | 1.71 | 14.61 |
| HR (w) | 18 | 1.8 | 1.00 | −32.54 |
| HR (w) | 18 | 2.0 | 1.32 | −11.46 |
| HR (w) | 18 | 2.2 | 1.73 | 16.05 |
| LR | 40 | 1.8 | 0.98 | −33.98 |
| LR | 40 | 2.0 | 1.22 | −17.85 |
| LR | 40 | 2.2 | 1.51 | 1.64 |
| LR (w) | 40 | 1.8 | 0.96 | −35.27 |
| LR (w) | 40 | 2.0 | 1.22 | −18.42 |
| LR (w) | 40 | 2.2 | 1.52 | 2.30 |
Notes. The estimates are based on synthetic surface-brightness maps of the N(H2) = 1022 cm−2 filament model. Relative errors are with respect to the true values that are read from the 3D model and reported on the first row. MBB refers to modified blackbody fits where all data at the same resolution, ‘HR’ to the higher-resolution versions (Palmeirim et al. 2013), and ‘(w)’ to alternative fits where the 160 μιη data are given a lower weight. The third column refers to the constant value of β used in the SED fits.
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