Table 3
Fit parameters used to fit the infrared spectra with OMNIFIT.
| L-band fitting | |||
|---|---|---|---|
| Components | Fitting range(a) | Scale factor (k)(b) | Refs.(c) |
| pure H2O | 1−3 | vary | 5 |
| H2O:CH3OH | 1−3 | vary | 6 |
| CO:CH3OH | 1−3 | M-band values | 7 |
| M-band fitting | |||
| Components | Fitting range(a) | Scale factor (k)(b) | Refs.(c) |
| CO:CH3OH | 4 | vary | 7 |
| CDE-Lorentzian | 4 | − | 8 |
Notes. (a)The fitting ranges are [1] 2.85−2.94 μm, [2] 3.17−3.23 μm, [3] 3.77−4.0 μm, and [4] 4.62−4.72 μm. The goodness of the fits, 
, was calculated for the specified fitting ranges. (b)
Scale factor: multiplier of the spectrum in OMNIFIT (see Eq. A.2).
(c) The references for the laboratory ice data are [5] Fraser & van Dishoeck (2004), [6] Dawes et al. (2016), [7] Cuppen et al. (2011), and [8] Pontoppidan et al. (2003b).
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