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Table A.7

Parameters of the best-fit UCHii model.

Parameter Symbol Model

Inner radius r0 103 AU
Outer radius r1 0.5 pca
Density at the inner radius ρ0 1.0 × 1010 cm-3
Average density with a beam of 57 800 AU 1.3 × 106 cm-3
Average density with a beam of 85 400 AU 7.1 × 105 cm-3
Density profile p 2.0
Temperature at the inner radius T0 244.3 K
Average temperature 31−34 K
Temperature profile q 0.4
Lifetime 3000 yr

Notes.

(a)

This value is limited by the largest 29″ IRAM beam size used in our observations.

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