Chemical evolution in the early phases of massive star formation - II. Deuteration

T. Gerner; Y. L. Shirley; H. Beuther; D. Semenov; H. Linz; T. Albertsson; Th. Henning

doi:10.1051/0004-6361/201423989

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Volume 579 (July 2015)

A&A, 579 (2015) A80

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Table A.4

Parameters of the best-fit IRDC model.

Parameter	Symbol	Model

Inner radius	r₀	12 700 AU
Outer radius	r₁	0.5 pc^a
Density at the inner radius	ρ₀	1.4 × 10⁵ cm^-3
Average density with a beam of 26 000 AU		8.9 × 10⁴ cm^-3
Average density with a beam of 54 000 AU		5.2 × 10⁴ cm^-3
Density profile	p	1.5
Temperature at the inner radius	T₀	11.3 K
Average temperature		11.3 K
Temperature profile	q	0
Lifetime		16 500 yr

Notes.

^(a)

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

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