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. Author manuscript; available in PMC: 2017 Feb 10.
Published in final edited form as: Nature. 2016 Aug 10;537(7619):207–209. doi: 10.1038/nature18957

Extended Data Table 1. Gas pressures and estimated magnetic field strengths.

*For a non-thermal velocity dispersion of σnth ≈ 1 km s-1.

Ionisation front Atomic layer Compressed structures Ambient PDR component
Thermal pressure (K cm-3) Pth,HII /k ≈ 6·107 Pth,HII /k ≤ 5·107 Pth,comp /k ≈ 2·108 Pth,amb /k ≈ 107
   Non-thermal pressure* (K cm-3) Pnth,comp/k ≈ 2·108 Pnth,amb /k ≈ 107
Magnetic field B (for β=PB/Pth=1) ≈800 μGauss ≈200 μGauss