Table 2
Emissivity index β1−3mm at 500 au and radial gradients.
| Name | β1−3mm at 500 au | β1−3mm gradient | |
|---|---|---|---|
| IRAS 2A1 | 0.38 ± 0.16 | 1.12 ± 0.37 | |
| c.r.c | 0.82 ± 0.17 | 0.86 ± 0.37 | |
| IRAS 4A1 | 0.44 ± 0.16 | 1.21 ± 0.36 | |
| c.r.c | 0.54 ± 0.16 | 1.31 ± 0.36 | |
| IRAS 4B | 0.64 ± 0.16 | 0.40 ± 0.36 | |
| c.r.c | 0.62 ± 0.16 | 0.46 ± 0.36 | |
| L1448-C | 0.41 ± 0.16 | 0.70 ± 0.37 | |
| c.r.c | – | – | |
| SVS13B | 0.51 ± 0.16 | 0.48 ± 0.37 | |
| c.r.c | 0.99 ± 0.16 | 0.22 ± 0.36 | |
| L1527 | 0.73 ± 0.16 | 0.45 ± 0.40 | |
| c.r.c | 1.41 ± 0.16 | 0.18 ± 0.39 | |
| SerpM-S68N | 0.92 ± 0.17 | 1.09 ± 0.38 | |
| c.r.c | 0.66 ± 0.27 | 1.47 ± 0.44 | |
| SerpM-SMM4 | 0.50 ± 0.16 | 0.79 ± 0.36 | |
| c.r.c | 0.44 ± 0.16 | 0.90 ± 0.37 | |
| SerpS-MM18 | 0.81 ± 0.16 | 0.77 ± 0.37 | |
| c.r.c | 0.74 ± 0.17 | 0.90 ± 0.37 | |
| L1157 | 0.65 ± 0.16 | 0.48 ± 0.42 | |
| c.r.c | 1.17 ± 0.18 | −0.09 ± 0.44 |
Notes. β1−3mm gradients are defined as Aso that β1- 3mm = A log (r) + B. β1−3mm values at 500 au and gradients are estimated by generating 2000 sets with β1−3mm values varying randomly within their individual error bars (following a normal distribution around their nominal value). Only baselines below 100 kλ are taken into account for the calculation of the gradients. The central region correction (c.r.c) rows indicate the values when the central regions are removed (see Sect. 4).
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