Table 1
Basic properties of the simulation models.
| Spectral type | K8V | K2V | G2V | F5V | |
|---|---|---|---|---|---|
 [K] (nominal) |
4000 | 5000 | 5770 | 6500 | |
| logg | 4.5 | 4.5 | 4.44 | 4.5 | |
| Hp(τR = 1) [km]a | 88.1 | 112.4 | 149.1 | 143.2 | |
| Box depth [km] | |||||
| Below τR = 1 | 744 | 1785 | 1333 | 3413 | |
| Above τR = 1 | 482 | 690 | 911 | 592 | |
Box depth [ ]b |
|||||
| Below τR = 1 | 3.88 | 5.79 | 3.85 | 6.54 | |
| Above τR = 1 | 6.86 | 8.32 | 7.93 | 4.94 | |
| Box width [km] | 4734 | 4928 | 5600 | 8388 | |
| Δz [km] | 7 | 9 | 12 | 15 | |
| Hp(τR = 1)∕Δz | 12.6 | 12.5 | 12.4 | 9.5 | |
| Δx, Δy [km] | 9 | 11 | 14 | 18 | |
| Lgran [km] | 468 | 588 | 772 | 910 | |
| Lgran∕Δx | 54 | 53 | 55 | 51 | |
Box width [ ] |
10.1 | 8.4 | 7.3 | 9.2 | |
| Nx,y | 526 | 448 | 400 | 466 | |
| Nz | 176 | 276 | 188 | 268 | |
| tstart [min] | 33 | 33 | 33 | 33 | |
| tend [min] | 666 | 666 | 666 | 666 | |
| trun [min] | 633 | 633 | 633 | 633 | |
Notes. See text in Sect. 2 for more details. For each spectral type two runs were carried out: one without a magnetic field and one with an initial homogeneous vertical field of a flux density of 50 G. Where not univocal, data refer to the magnetic field-free simulation. (a) Hp is the pressure scale height. (b) 
is the number of pressure scale heights.
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