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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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