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Table 1
Initial conditions for our simulations.
| Parameter | Value | Model | Description | |
|
|
||||
| Ndisc | 128 000 | Number of disc particles | ||
| μ | 2.3 | Mean molecular weight | ||
| M∗ | 0.4 M⊙ | |||
| Mdisc | 0.004 M⊙ | |||
| Rdisc,inner | 10 AU | |||
| Rdisc,outer | 100 AU | |||
| Σ(r) |
|
Surface density profile | ||
| EoS | Isothermal | Equation of state | ||
| T | 25 K | Temperature of gas particles | ||
| cs | 0.3 km s-1 | Sound speed | ||
| Rsink | 1 AU | Sink particle radius | ||
| Nneighbours | 64 ± 2 | |||
| ϵgrav | 1 AU | Gravitational softening length | ||
| αSPH | 0.1 | Artificial viscosity parameter | ||
| Lcylinder | 400 AU | Length of computational domain | ||
| Rcylinder | 200 AU | Radius of computational domain | ||
| t sim | 10 000 yr | Timescale of the simulation | ||
|
|
||||
| v ISM | 1 km s-1 | V1 | Velocity of ISM | |
| 3 km s-1 | V3 | |||
| 5 km s-1 | V5 | |||
| 10 km s-1 | V10 | |||
| 20 km s-1 | V20 | |||
| 30 km s-1 | V30 | |||
| n,ρ | 5 × 104 cm-3 | 1.9 × 10-19 g/cm-3 | N4 | (Number) density of ISM |
| 5 × 105 cm-3 | 1.9 × 10-18 g/cm-3 | N5 | ||
| 5 × 106 cm-3 | 1.9 × 10-17 g/cm-3 | N6 | ||
Notes. Only the density and velocity vary between simulations. The letter-number combinations behind the velocities and densities are used in the labels of the simulations.
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