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Table A.6

Parameters of the best-fit HMC model.

Parameter Symbol Model

Inner radius r0 1 140 AU
Outer radius r1 0.5 pca
Density at the inner radius ρ0 1.3 × 108 cm-3
Average density with a beam of 45 400 AU 1.7 × 106 cm-3
Average density with a beam of 63 100 AU 9.6 × 105 cm-3
Density profile p 2.0
Temperature at the inner radius T 0 162.9 K
Average temperature 50−55 K
Temperature profile q 0.4
Lifetime 35 000 yr

Notes.

(a)

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

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