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Table A.5

Parameters of the best-fit HMPO model.

Parameter Symbol Model

Inner radius r0 103 AU
Outer radius r1 0.5 pca
Density at the inner radius ρ0 1.5 × 109 cm-3
Average density with a beam of 21 700 AU 1.6 × 106 cm-3
Average density with a beam of 57 300 AU 3.7 × 105 cm-3
Density profile p 1.8
Temperature at the inner radius T0 75.8 K
Average temperature 21.5 K
Temperature profile q 0.4
Lifetime 32 000 yr

Notes.

(a)

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

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