Ground Based Observation of Isotopic Oxygen in the Martian Atmosphere Using Infrared Heterodyne Spectroscopy

Details Ground Based Observation of Isotopic Oxygen in the Martian Atmosphere Using Infrared Heterodyne Spectroscopy Ground Based Observation of Isotopic Oxygen in the Martian Atmosphere Using Infrared Heterodyne Spectroscopy

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.1412s&link_type=abstract

American Astronomical Society, DPS meeting #40, #14.12; Bulletin of the American Astronomical Society, Vol. 40, p.409

Astronomy and Astrophysics

Astronomy

Scientific paper

Infrared heterodyne spectra of isotopic CO2 in the Martian atmosphere were obtained using the Goddard Heterodyne Instrument for Planetary Wind and Composition, HIPWAC, which was interfaced with the 3-meter telescope at the NASA Infrared Telescope Facility. Spectra were collected at a resolution of λ/Δλ=107.Absorption features of the CO2 isotopologues have been identified from which isotopic ratios of oxygen have been determined. The isotopic ratios 17O/16O and 18O/16O in the Martian atmosphere can be related to Martian atmospheric evolution and can be compared to isotopic ratios of oxygen in the Earth's atmosphere. Isotopic carbon and oxygen are important constraints on any theory for the erosion of the Martian primordial atmosphere and the interaction between the atmosphere and surface or subsurface chemical reservoirs.
This research was supported by the NASA Planetary Astronomy Program and is based on data that was collected at the NASA Infrared Telescope Facility.

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