VizieR Online Data Catalog: Methylamine mid-IR spectra in ice mixtures (Rachid+, 2021)
Abstract
Tables B1 to B15 list the peak position and FWHM of selected methylamine features in pure and mixed ices at different temperatures. Each table presents the data for a specific methylamine vibrational mode in mixtures containing methylamine at the same dilution (1:5, 1:10, or 1:20). Tables B7, B8, and B9 present the data for two bands (around 1455cm-1 and 1478cm-1) that are assigned to the CH3 antisym deformation mode of methylamine. In the cases in which these modes overlap, the band profile is decomposed into two component features and the FWHM and peak position are calculated for each of the individual components. The absorption profile between 2800-2900cm-1 was decomposed into Gaussian features for the calculation of peak position and FWHM for the CH3 antisymmetric stretch feature (2881.3cm-1). In cases where the bands are weak or blended with matrix bands, the FWHM is not determined, and a rough peak position is given and marked with an asterisk (*). The resulting uncertainty is much larger than the peak positions that are derived for features that do not overlap.
Tables C1 to C15 present the integrated absorbance of the methylamine bands (i.e., the band areas) in different ice mixtures and at selected temperatures. Each table displays the data for one specific mixture. The band's integrated absorption is normalized in relation to the CH3 antisymmetric deformation mode, around 1478.6cm-1, from the given mixture at 15K. The CH3 antisymmetric deformation mode was chosen for normalization because this feature is distinguishable in all the mixtures and does not overlap with any of the matrix components. (16 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- July 2021
- DOI:
- 10.26093/cds/vizier.36530116
- Bibcode:
- 2021yCat..36530116R
- Keywords:
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- Atomic physics