New infrared spectra of the Jovian planets from 12000 to 4000 cm-1 by Fourier transform spectroscopy. III. First-overtone pressure-induced H2 absorption in the atmosphere of Jupiter and Saturn.
Abstract
Summary. An analysis of the 2-0 pressure-induced dipole absorption by hydrogen in the atmospheres of Jupiter and Saturn is presented. From the high resolution spectra recorded in 1972 with a Fourier Transform Interferometer at the Haute-Provence Observatory, and using laboratory data for H2 absorption, we find that hydrogen absorption is probably im portant in the frequency range considered. Assuming a reflecting layer model, upper limits for the H2 abundance of 34+ 16 km-atm for Jupiter and 63+23 km-atm for Saturn are obtained. Key words: Jupiter - Saturn hydrogen planetary atmospheres Fourier spectroscopy
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1974
- Bibcode:
- 1974A&A....35..333D
- Keywords:
-
- Absorption Spectroscopy;
- Atmospheric Pressure;
- Hydrogen;
- Infrared Astronomy;
- Jupiter Atmosphere;
- Saturn (Planet);
- Absorptivity;
- Abundance;
- Astronomical Spectroscopy;
- Fourier Transformation;
- Infrared Spectra;
- Methane;
- Planetary Atmospheres;
- Pressure Effects;
- Spectrum Analysis;
- Lunar and Planetary Exploration