Vertical shear instability with dust evolution and consistent cooling times - On the importance of the initial dust distribution

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Volume 687 (July 2024)

A&A, 687 (2024) L5

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Table 1.

Simulation parameters of the three presented runs.

Simulation parameter	Value
Inner boundary R_in	25 au
Outer boundary R_out	150 au
Vertical extend Δϑ	$\pm 3 \frac{H}{R} (50 au)$ $\pm 3 \nicefrac{H}{R}({50}\,\mathrm{au})$
Resolution N_r × N_ϑ	2011×512

Stellar mass M_*	1 M_⊙
Disk gas mass M_disk	0.05 M_⊙
Temperature power law β_T	−0.5
Column density power law β_Σ	−0.85
Heat capacity ratio γ	1.4
Disk aspect ratio $\frac{H}{R}$ $\nicefrac{\mathrm{H}}{\mathrm{R}}$ (50 au)	0.07957
Disk characteristic radius R_c	60 au

Minimum particle size a_min	0.1 μm
Initial particle sizes a_ini	1 μm, 10 μm and 100 μm
Fragmentation velocity v_frag	500 cm s⁻¹
Initial dust-to-gas ratio $ε_{0} = \frac{Σ_{d, 0}}{Σ_{g, 0}}$ $\varepsilon_0=\nicefrac{\Sigma_{\mathrm{d,0}}}{\Sigma_{\mathrm{g,0}}}$	0.01
Size distribution power law p	−3.5
Initial dust diffusivity δ_ini	10⁻⁵
Dust material density ρ_m	1.67 g cm⁻³

Notes. The only difference between the simulations is the initial particle size.

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