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Table 2.
Clump parameters used in radiative transfer simulations.
| Clump | Distance from the star (AU) | Age | FWHM size (AU) | Dust mass | Max opt. depth | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| ID | x | y | z | (yr) | x | y | z | (M⊙) | τB6 | τB7 |
| VY | 0 | 0 | 0 | <20 | 90 | 90 | 90 | 0.014 | 0.03 | 0.07 |
| A | 155 | 745 | 0 | 60 | 60 | 70 | 60 | 0.002 | 0.10 | 0.24 |
| B | 140 | 350 | 300 | 38 | 230 | 350 | 100 | 0.004 | 0.05 | 0.11 |
| C | –500 | –35 | 0 | 40 | 120 (a) | 60 (a) | 200 (a) | 0.46 | 18.1 | 42.0 |
| D | –865 | –60 | –250 | 71 | 34 | 56 | 60 | 0.002 | 0.10 | 0.22 |
| SW | 150 | –1300 | 0 | 104 | 400 | 160 | 240 | 0.001 (b) | 0.01 | 0.03 |
Notes. Distances and sizes are given in a Cartesian system, xyz, where negative z values represent the near side of the envelope. Masses are overestimated (see text). Maximum optical depths were determined in images simulated with a beam of 135 mas.
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