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Laboratory studies, analysis, and interpretation of the spectra of hydrocarbons present in planetary atmospheres including cyanoacetylene, acetylene, propane, and ethaneCombining broadband Fourier transform spectrometers (FTS) from the McMath facility at NSO and from NRC in Ottawa and narrow band TDL data from the laboratories with computational physics techniques has produced a broad range of results for the study of planetary atmospheres. Motivation for the effort flows from the Voyager/IRIS observations and the needs of Voyager analysis for laboratory results. In addition, anticipation of the Cassini mission adds incentive to pursue studies of observed and potentially observable constituents of planetary atmospheres. Current studies include cyanoacetylene, acetylene, propane, and ethane. Particular attention is devoted to cyanoacetylen (H3CN) which is observed in the atmosphere of Titan. The results of a high resolution infrared laboratory study of the line positions of the 663, 449, and 22.5/cm fundamental bands are presented. Line position, reproducible to better than 5 MHz for the first two bands, are available for infrared astrophysical searches. Intensity and broadening studies are in progress. Acetylene is a nearly ubiquitous atmospheric constituent of the outer planets and Titan due to the nature of methane photochemistry. Results of ambient temperature absolute intensity measurements are presented for the fundamental and two two-quantum hotband in the 730/cm region. Low temperature hotband intensity and linewidth measurements are planned.
Document ID
19900017432
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Blass, William E.
(Tennessee Univ. Knoxville., United States)
Daunt, Stephen J.
(Tennessee Univ. Knoxville., United States)
Peters, Antoni V.
(Concordia Univ. Montreal, Quebec , Canada)
Weber, Mark C.
(Tennessee Univ. Knoxville, TN, United States)
Date Acquired
August 14, 2013
Publication Date
May 1, 1990
Publication Information
Publication: NASA, Goddard Space Flight Center, First International Conference on Laboratory Research for Planetary Atmospheres
Subject Category
Lunar And Planetary Exploration
Accession Number
90N26748
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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