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Table 1

Infrared-band positions and strengths (), deposited column density (N in 1015 molec/cm2) and molecular dipole moment (μ) of the samples used in this work.

Species Position N μ
[cm-1] [cm/molec] [×1015 molec./cm2)] [D]
CO 2139 1.1 ±0.1 × 10-17a 0.11
H2O 3259 1.7 ±0.2 × 10-16b 1.85
CH3OH 1026 1.8 ±0.1 × 10-17c 1.66
NH3 1067 1.7 ±0.1 × 10-17c 1.47
H2S 2544 2.0 ±0.2 × 10-17d 0.95

Notes. Error estimation in the column density is the sum of the error by the band strength, the error by thickness loss for photodesorption, and the MDHL, PMT, and multimeter stabilities.

(a)

Jiang et al. (1975),

(b)

calculated for this work,

(c)

d’Hendecourt & Allamandola (1986),

(d)

Jiménez-Escobar & Muñoz Caro (2011).

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