Thermal desorption of circumstellar and cometary ice analogs

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Table 1

Infrared feature used to calculate the column density of each component (frequencies and band strengths for pure ices at 8 K).

Molecule	Vibrational	Frequency	Band strength
	mode	(cm^-1)	(cm molec^-1)

H₂O	stretching O–H	3280	2.0 × 10^-16^a
CO	stretching C=O	2138	1.1 × 10^-17^b
CO₂	stretching C=O	2344	7.6 × 10^-17^c
CH₃OH	stretching C–O	1025	1.8 × 10^-17^d
NH₃	umbrella mode	1070	1.7 × 10^-17^e

Notes.

^(a)

From Hagen (1981).

^(b)

From Jiang et al. (1975).

^(c)

From Yamada & Person (1964).

^(d)

From d’Hendecourt & Allamandola (1986).

^(e)

From Sandford & Allamandola (1993).

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