Ethane and acetylene abundances in the Jovian atmosphere
1976; IOP Publishing; Volume: 209; Linguagem: Inglês
10.1086/154720
ISSN1538-4357
AutoresA. T. Tokunaga, R. F. Knacke, T. Owen,
Tópico(s)Astrophysics and Star Formation Studies
Resumoview Abstract Citations (40) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Ethane and acetylene abundances in the Jovian atmosphere. Tokunaga, A. ; Knacke, R. F. ; Owen, T. Abstract The paper reports spectra of Jupiter in the spectral region from 755 to 850 kaysers, which covers the nu-9 fundamental of ethane and contains lines from the R branch of the nu-5 fundamental of acetylene. The monochromatic absorption coefficient of the central Q branch of the nu-9 fundamental of ethane, which was determined in the laboratory, is applied in a radiative-transfer calculation to evaluate the ethane mixing ratio in the Jovian atmosphere; the present data are also used to place an upper limit on the acetylene mixing ratio. For the radiative-transfer calculation, emission intensity is computed for the region above the 0.02-atm level assuming both an isothermal inversion layer and a previously reported temperature profile. The resulting maximum mixing ratios consistent with the observations are 0.00003 for ethane and 7.5 by 10 to the -8th power for acetylene. Publication: The Astrophysical Journal Pub Date: October 1976 DOI: 10.1086/154720 Bibcode: 1976ApJ...209..294T Keywords: Abundance; Acetylene; Atmospheric Composition; Ethane; Jupiter Atmosphere; Molecular Spectra; Absorptivity; Atmospheric Models; Atmospheric Temperature; Data Reduction; Emission Spectra; Radiative Transfer; Temperature Inversions; Lunar and Planetary Exploration full text sources ADS |
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