HIGH RESOLUTION EMISSION SPECTRUM OF OH IN AN OXYACETYLENE FLAME FROM 3.7 TO 0.9 MICRONS.
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Date
1976
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Publisher
Ohio State University
Abstract
The vibration-rotation OH spectrum emitted by an acetylene oxygen flame has been measured between 2700 and $11 000 cm^{-1}$ with a high resolution Fourier Spectrometer. The main interferences in the spectra are due to water vapor absorption and emission necessarily mixed with OH in the source. Nevertheless, line positions to high J values (more than 20 for some P branches) of the 1-0, 2-1 bands of the $\Delta v = 1$ sequence, 2-0, 3-1, 4-2, 5-3 of ${\Delta} v$ = 2 and 3-0, 4-1, 5-2 bands of ${\Delta} v = 3$ are reported. Molecular constants for each band were derived by using a computer program described by Albritton, et al. Ground state molecular constants of OH were derived from a least squares fit to these data, weighted according to their estimated uncertainties. Uncertainties in the molecular constants derived from these data are considerably improved relative to the previously available constants. Predicted positions of some unobserved bands of OH have been determined from these new constants for the purpose of aiding stellar atmospheric studies.
Description
This research was supported by the National Research Council of Canada through Grant No. A6025. Permanent address of R. H. Tipping: Department of Physics, Memorial University of Newfoundland, St. John's, Newfoundland, Canada, A1C 5S7
Author Institution: Observatoire de Meudon, Laboratoire du Telescope Infrarouge; Observatoire de Meudon, Digilab, Inc.
Author Institution: Observatoire de Meudon, Laboratoire du Telescope Infrarouge; Observatoire de Meudon, Digilab, Inc.