Table 4
Power-law fitting results.
| Parameter | Range explored | # Values | Distr. | Best-fit [3σ] | + Inner |
|
|
|||||
| Rin [au] | 2−60 | 187 | temp | 3.1* [2.0*−24.8] | 14.5 |
| Rout [au] | 3−100 | 155 | temp | 41.9 [37.3−45.5] | 41.9 |
| α | −5−5 | 101 | lin | 2.8 [1.8−4.8] | 3.5 |
|
|
|||||
| smin [μm] | 0.2−20 | 494 | log | 0.2* [0.2*−0.5] | 1.8 |
| smax [μm] | 2000 | 1 | fixed | ... | ... |
| γ | −5−–3 | 21 | lin | −3.3 [−3.4−–3.3] | −3.3 |
|
|
|||||
| θ | 90° | 1 | fixed | ... | ... |
| Md [M⊕] | ... | ... | cont | 4.7 × 10-3 | 5.7 × 10-3 |
Notes. The distributions of the values considered in the parameter space are: temp – by equal steps in temperature of the grain size with the steepest radial temperature gradient; lin – linear, log – linear in the logarithm of the parameter; fixed – fixed value (no distribution at all); cont – continuous (scaling of the disc mass to minimise the χ2 for given values of all other parameters). Values marked with The column “+ inner” shows best-fit values of the outer disc after subtracting a model of the inner, unresolved component, assuming it to be a debris disc. These values illustrate the uncertainties of the model parameters due to the unknown nature and uncertain parameters of this component. The mass values given are for grains up to s = 1 mm.
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