Table 1
Typical examples from different runs for the fraction of material deflected from the original trajectory during the first and second pericentre passages (evaluated with respect to the total number of particles in the cloud at the corresponding stage).
| Run | Model characteristics | Note | Mass capture [%] | ||||
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| Initial distribution | Bow shock | M⋆/M⊙ | Grain size [μm] | 1st passage | 2nd passage | ||
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| 1 | disc-like (dr) | no | 3 | 2.5 | – | 99.2 | 0.0 |
| 2 | spherical | no | 3 | 2.5 | – | 100.0 | 0.0 |
| 3 | disc-like (dr) | no | 3 | 2.5 | – | 99.4 | 0.0 |
| 4 | disc-like (dr) | no | 3 | 5 | – | 99.6 | 0.0 |
| 5 | disc-like (dr) | no | 2 | 5 | – | 99.6 | 50.0 |
| 6 | disc-like (dr) | no | 2 | 5 | – | 99.5 | 0.0 |
| 7 | disc-like (dr) | no | 3 | 2.5 | (i) | 95.2 | 12.5 |
| 8 | disc-like (dr) | no | 3 | 2.5 | (i), (ii) 1000 km s-1 | 94.4 | 14.3 |
| 9 | disc-like (dr) | yes | 2 | 2.5 | (ii) 500 km s-1 | 86.6 | 83.6 |
| 10 | disc-like (dr) | yes | 2 | 2.5 | (ii) 1000 km s-1 | 88.6 | 58.8 |
| 11 | spherical | yes | 2 | 2.5 | (ii) 500 km s-1 | 99.2 | 100.0 |
| 12 | disc-like (dr) | yes | 2 | 2.5 | (ii) 500 km s-1 | 91.3 | 65.5 |
| 13 | disc-like (dr) | yes | 2 | 0.6 | (ii) 500 km s-1 | 91.3 | 71.3 |
| 14 | disc-like (dr) | yes | 2 | 0.1 | (ii) 500 km s-1 | 98.1 | 100.0 |
| 15 | disc-like (dr) | yes | 2 | 2.5 | (ii) 500 km s-1 | 87.3 | 90.6 |
| 16 | sphere+disc (dr) | yes | 3 | 2.5 | (ii), 1000 km s-1, rad | 93.3 | 68.7 |
| 17 | disc-like (d) | yes | 2 | 2.5 | (ii), 1000 km s-1, rad | 88.6 | 74.8 |
| 18 | disc-like (r) | yes | 2 | 2.5 | (ii), 1000 km s-1, rad | 90.6 | 89.8 |
Notes. Columns of model characteristics specify the initial distribution of particle positions and velocities (disc-like Keplerian vs. spherical Gaussian), presence or absence of the bow-shock effect and wind, assumed mass of the star in the cloud core, and size of the dust grains. (i) dust region extending from r = 0.001 AU; (ii) central outflow wind vw included; “rad” denotes radiation pressure from the star; (d, r, dr) denotes only direct orbits, only retrograde orbits, and both, respectively. Additional (non-essential) parameter is the number of numerical particles in each run (typically of the order of 103).
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