Table 1
Parameters and some characteristic quantities computed as volume- and time-averages over the whole computational domain.
| Run | Ω | S | q | urms | u′rms | ωrms | Re | |Co| | Δt | Eth | Ekin | AH | AV | SNe |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| [Ω0] | [Ω0] | [ km s−1] | [ km s−1] | [ Gyr−1] | [tto] | [σSN] | [σSN] | |||||||
| 4Ωp | + 4 | − 4 | + 1 | 46 ± 21 | 26 ± 21 | 695 | 103 | 0.75 | 7.8 | 27.2 | 16.7 | − 0.08 | 0.82 | 6795 |
| 2Ωp | + 2 | − 2 | + 1 | 61 ± 33 | 32 ± 30 | 831 | 77 | 0.30 | 9.6 | 29.5 | 16.3 | − 0.06 | 0.81 | 7179 |
| 1Ωp | + 1 | − 1 | + 1 | 48 ± 24 | 28 ± 26 | 722 | 68 | 0.18 | 8.3 | 28.8 | 14.5 | − 0.02 | 1.14 | 6037 |
| 0Ω0 | 0 | 0 | – | 50 ± 15 | 28 ± 18 | 747 | 93 | 0.00 | 9.2 | 27.7 | 14.6 | 0.00 | 0.85 | 6897 |
| 1Ωn | − 1 | − 1 | − 1 | 87 ± 33 | 53 ± 34 | 1114 | 103 | 0.09 | 15.9 | 33.0 | 22.0 | 0.04 | 1.65 | 6371 |
| 2Ωn | − 2 | − 2 | − 1 | 107 ± 43 | 65 ± 48 | 1308 | 102 | 0.15 | 19.6 | 31.4 | 17.3 | 0.07 | 1.65 | 6164 |
| 4Ωn | − 4 | − 4 | − 1 | 96 ± 48 | 49 ± 35 | 1160 | 79 | 0.40 | 14.7 | 35.5 | 24.2 | 0.21 | 1.91 | 7871 |
Notes. Angular velocity
Ω and
shear S are in
multiples of the angular velocity of our Galaxy in the solar neighborhood,
Ω0 = 25 km s−1 kpc−1, with
q = −S∕Ω. The Coriolis
number, Co,
is defined in Eq. (9), and Re by Eq. (10).
Δt is
the time span of the statistically steady state over which the data
have been evaluated, in multiples of the run-specific turnover time,
.
In each case this corresponds to
Δt = 300 Myr.
The time-averaged total thermal,
Eth , and
kinetic, Ekin,
energy are expressed relative to the typical energy
injected per SN. The anisotropies of the velocity field
AH and
AV
are defined in Eqs. (13) and (14),
respectively. We also list the total number of SNe injected over
Δt.
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