Table 2
Dust diffusion parameters at r = 55 au.
| Scenario | a (cm) | δz(zd,rms) (a) | δz(σzd) (a) | δr(Δrinit = 0.02 au) (b) | δr(Δrinit = 0.004 au) (b) |
|---|---|---|---|---|---|
| VSI only | 0.3 | (2.87 ± 0.94) × 10−3 | (5.32 ± 4.27) × 10−4 | (3.59 ± 0.27) × 10−4 | (3.95 ± 0.33) × 10−4 |
| VSI only | 3 | (1.15 ± 0.48) × 10−3 | (1.33 ± 0.67) × 10−6 | (−3.47 ± 3.61) × 10−9 | (−4.98 ± 2.72) × 10−9 |
| SI only | 0.3 | (1.34 ± 0.57) × 10−5 | (1.34 ± 0.57) × 10−5 | (1.00 ± 0.03) × 10−5 | (5.82 ± 0.25) × 10−6 |
| SI only | 3 | (5.77 ± 0.40) × 10−5 | (4.06 ± 0.46) × 10−5 | (3.01 ± 0.08) × 10−4 | (3.13 ± 0.12) × 10−4 |
| SIwhileVSI | 0.3 | (1.28 ± 0.02) × 10−5 | (1.27 ± 0.03) × 10−5 | (2.79 ± 0.07) × 10−5 | (2.00 ± 0.11) × 10−5 |
| SIwhileVSI | 3 | (1.13 ± 0.26) × 10−4 | (5.24 ± 1.19) × 10−5 | (7.13 ± 0.53) × 10−4 | (7.28 ± 0.52) × 10−4 |
| SIafterVSI | 0.3 | (4.12 ± 1.00) × 10−4 | (7.49 ± 0.56) × 10−5 | (1.28 ± 0.03) × 10−4 | (1.44 ± 0.04) × 10−4 |
| SIafterVSI | 3 | (1.21 ± 0.33) × 10−3 | (5.66 ± 3.04) × 10−5 | (2.69 ± 0.13) × 10−3 | (1.81 ± 0.12) × 10−3 |
| VSI only (c) | 0.1 | (3.98 ± 0.67) × 10−3 | (6.22 ± 0.33) × 10−4 | (6.15 ± 1.08) × 10−5 | (4.78 ± 0.52) × 10−5 |
| VSI only (r = 30 au) (c) | 0.1 | (8.96 ± 0.38) × 10−4 | (7.41 ± 0.19) × 10−4 | (7.72 ± 0.79) × 10−4 | (4.98 ± 1.25) × 10−4 |
Notes. (a)Dimensionless coefficient of vertical dust diffusion, calculated from either the time-averaged root mean square or the time-averaged standard deviation of the vertical particle positions at r = 55 au (b)Dimensionless radial dust diffusion coefficient, computed considering all dust particles that are initially located within 0.02 au or 0.004 au around r = 55 au. Here, Hg and ΩK are the gas scale height and Keplerian orbital frequency. (c)Three-dimensional Pluto Code simulation presented by Flock et al. (2020).
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