Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.4806b&link_type=abstract
American Astronomical Society, DPS meeting #42, #48.06; Bulletin of the American Astronomical Society, Vol. 42, p.970
Astronomy and Astrophysics
Astronomy
Scientific paper
A new theoretical analysis of the ethane spectrum between 1330 and 1610 cm-1 has been undertaken in order to create the first line-by-line database of molecular parameters for this spectral region. For this, high resolution spectra were obtained at room and cold (130 K) temperatures with two Bruker Fourier transform spectrometers (at 0.002 cm-1 resolution in Brussels and at 0.003 cm-1 resolution in Pasadena). Over 5000 lines were assigned to five bands in the region: v6, v8, v4+v12 and 2v4+v9 cold bands, and one hot band (v4+v8-v4). This new study employed a much improved theoretical Hamiltonian to reproduce the very complicated spectral structures resulting from numerous interactions between these vibrational modes. This advancement has enabled us to provide a quantum mechanical prediction of line positions and intensities of C2H6 at 7 micron long needed for remote sensing of outer planets and Titan. Two manuscripts are in preparation.
Part of the research described in this paper was performed at the Jet Propulsion Laboratory, California Institute of Technology, Connecticut College, and NASA Langley under contract with the National Aeronautics and Space Administration, and with funding from FRS-FNRS in Belgium.
Brown Linda R.
di Lauro Carlo
Lattanzi Franca
Mantz Arlan W.
Smith Mary Ann H.
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