Open Access
Table C.1.
Model parameters.
| Parameter | Unit | Explanation |
|---|---|---|
| G = 5 × 10−15 | pc3 yr |
Gravitation constant |
| ldriv | pc | Turbulent driving length scale |
| vturb | pc yr−1 | Gas turbulent 3D velocity dispersion at ldriv |
| lcl | pc | Cloud size |
| vturb, cl | pc yr−1 | Cloud 3D velocity dispersion |
| σcl | pc yr−1 | Cloud 1D velocity dispersion |
| δ = ldriv/lcl | Scaling between driving length scale and cloud size | |
| ΦV | Volume filling factor of self-gravitating clouds | |
| ⟨ρ⟩ | M⊙ pc−3 | Mean gas density |
 |
yr | |
| ρcl = ⟨ρ⟩/ΦV | M⊙ pc−3 | Cloud density |
| tff, cl | yr | Cloud free fall timescale at size lcl |
| tturb, cl | yr | Cloud turbulent timescale at size lcl |
| tlife, cl | yr | Cloud lifetime |
| tdep | yr | Gas depletion timescale |
 |
M⊙ pc−3 yr−1 | SFR per unit volume |
| ξ = 4.6 × 10−8 | pc2 yr−2 | Constant relating SN energy input to SF |
| ϵff | Star formation efficiency per free fall time | |
| fSF | Fraction of the star-forming molecular gas mass | |
| ϵ* | Cloud mass fraction converted into stars | |
| ϵlife = tff, cl/tlife, cl | Cloud free-fall time divided by the lifetime | |
| tdiss = ldriv/vturb | yr | Turbulent dissipation timescale |
| tcomp = ρ/(dρ/dt) | yr | Gas compression timescale |
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