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Table B.2.
Results of the fitting for the mock galaxy images with a double-exponential and Sérsic dust disc.
| Band | nλ | nλ/n3.4 |  |
 |
|---|---|---|---|---|
| (kpc) | ||||
| Exponential dust disc: | ||||
| WISE W1 | 1.19 ± 0.10 | 1.00 ± 0.01 | 9.14 ± 0.73 | 1.00 ± 0.01 |
| PACS 100 | 1.05 ± 0.09 | 0.88 ± 0.11 | 8.32 ± 0.68 | 0.91 ± 0.10 |
| PACS 160 | 0.97 ± 0.08 | 0.82 ± 0.10 | 9.35 ± 0.76 | 1.02 ± 0.12 |
| SPIRE 250 | 0.95 ± 0.08 | 0.80 ± 0.10 | 9.71 ± 0.79 | 1.06 ± 0.12 |
| SPIRE 350 | 0.95 ± 0.10 | 0.80 ± 0.11 | 10.09 ± 0.91 | 1.10 ± 0.13 |
| SPIRE 500 | 0.92 ± 0.14 | 0.78 ± 0.13 | 10.37 ± 1.06 | 1.13 ± 0.15 |
| Sérsic dust disc (nd = 0.6): | ||||
| WISE W1 | 1.14 ± 0.10 | 1.00 ± 0.01 | 9.55 ± 0.77 | 1.00 ± 0.01 |
| PACS 100 | 0.82 ± 0.07 | 0.72 ± 0.09 | 8.99 ± 0.73 | 0.94 ± 0.11 |
| PACS 160 | 0.73 ± 0.06 | 0.64 ± 0.08 | 10.10 ± 0.81 | 1.06 ± 0.12 |
| SPIRE 250 | 0.67 ± 0.06 | 0.59 ± 0.07 | 10.63 ± 0.86 | 1.11 ± 0.13 |
| SPIRE 350 | 0.64 ± 0.07 | 0.57 ± 0.08 | 11.01 ± 0.94 | 1.15 ± 0.13 |
| SPIRE 500 | 0.61 ± 0.09 | 0.54 ± 0.09 | 11.20 ± 1.08 | 1.17 ± 0.15 |
Notes. Only the average values for the whole sample of 300 galaxies are listed. The effective radius for an exponential disc is related to its scalelength by 
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