Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....56..227d&link_type=abstract
Astronomy and Astrophysics, vol. 56, no. 1-2, Apr. 1977, p. 227-233.
Astronomy and Astrophysics
Astrophysics
4
Absorption Spectra, Hydrogen, Infrared Spectra, Jupiter Atmosphere, Saturn Atmosphere, Abundance, Ammonia, Astronomical Spectroscopy, Methane, Molecular Spectra, Near Infrared Radiation, Planetary Radiation, Quadrupoles, Spectrum Analysis
Scientific paper
A study of the 2-0 quadrupole spectrum of H2 in spectra of Jupiter and Saturn is reported. The Q(1) line is clearly visible on these spectra. CH4 and NH3 absorptions are eliminated by comparison with high-resolution laboratory spectra recorded under appropriate conditions. The H2 abundances obtained in the reflecting-layer hypothesis are much lower than H2 abundances deduced from other measurements at comparable wavelengths, for both Jupiter and Saturn. The necessity of introducing scattering into the analyses of absorptions in the near-infrared for both planets is emphasized.
de Bergh Catherine
Lecacheux J.J.
Maillard Jean Pierre
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