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Table 1

Band strength (A) values of measured bands in the near- and mid-IR regions used for determination of the A values in the far-IR.

Ice Frequency (cm-1) Mode A (cm molec-1) Reference

NH3 4995 ν1 + ν4 (?) 8.1 × 10-19 a
4480 ν1 + ν2 (?) 8.7 × 10-19 a
3211–3375 ν1,ν3 2.2 × 10-17 b
1625 ν 4 4.7 × 10-18 b
1070 ν 2 1.7 × 10-17 b
CH3OH 4396 ν1 + ν11 or ν1 + ν7 8.7 × 10-19 a, b
4271 ν1 + ν8 8.0 × 10-20 a, b
2527 combination mode 2.6 × 10-18 c
1461 ν4,ν5,ν6,ν10 1.2 × 10-17 d
1130 ν7,ν11 1.8 × 10-18 d
705 ν 12 1.4 × 10-17 d
H2O 5001 ν2+ν3 1.2 × 10-18 a
13CO2 2283 ν 3 7.8 × 10-17 e

Reference. (a) From Gerakines et al. (2005). (b) From Sandford & Allamandola (1993). (c) From Allamandola et al. (1992). (d) From Hudgins et al. (1993). (e) From Gerakines et al. (1995).

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