Table 3
Parameters of the dust models.
| Parametera | Solar | HD 37061 | HD 93250 | HD 99872 | HD 37903 |
| neighbourhood | (NGC 2023) | ||||
|
|
|||||
| r+ (nm) | 440 | 485 | 380 | 400 | 485 |
| r− (nm) | 100 | 125 | 100 | 140 | 120 |
| q | 3.4 | 3.0 | 3.3 | 3.3 | 3.2 |
| a/b | 2 | 2 | 2.2 | 6 | 2 |
| w aC | 29.2 | 40.1 | 28.8 | 31.5 | 34.3 |
| w Si | 54.6 | 56.2 | 58.2 | 55.1 | 48.1 |
| w gr | 4.3 | 1.0 | 0.8 | 2.4 | 5.7 |
| w sSi | 8.2 | 0.3 | 8.9 | 5.4 | 11.2 |
| w PAHs | 1.4 | 0.8 | 1.3 | 2.4 | 0.2 |
| w PAHb | 2.3 | 1.6 | 1.9 | 3.2 | 0.5 |
Notes.
Upper (r+) and lower (r−) particle radii of aligned grains, exponent of the dust size distribution (q), axial ratio of the particles (a/b), and relative weight per g-dust (%) of amorphous carbon (waC), large silicates (wSi), graphite (wgr), small silicates (wsSi), small (wPAHs) and large (wPAHb) PAHs, respectively.
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