Measurements of the D/H ratio in planetary atmospheres by ground based infrared spectroscopy

Details Measurements of the D/H ratio in planetary atmospheres by ground based infrared spectroscopy Measurements of the D/H ratio in planetary atmospheres by ground based infrared spectroscopy

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290...41d&link_type=abstract

In ESA, Infrared Spectroscopy in Astronomy, p 41-47 (SEE N90-19084 11-89)

Astronomy and Astrophysics

Astronomy

1

Deuterium, Ground Stations, Infrared Spectroscopy, Planetary Atmospheres, Data Acquisition, Isotopes, Methane, Solar System, Spectrum Analysis

Scientific paper

A systematic study of deuterium in the solar system using the molecules CH3D and HDO as tracers is carried out. For the outer solar system, ground-based spectra of Saturn, Uranus, Neptune and Titan in the region of CH3D absorptions near, 1.6 microns are obtained. The analyses of these spectra required extensive high-resolution laboratory studies of both CH4 and CH3D. For the terrestrial planets, the spectrum of Mars in the region of HDO absorption near 3.7 microns, is recorded. A similar study of Venus is underway. The values of D/H derived from these investigations are used to constrain models for the origin and evolution of the various atmospheres.

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