Observations of CO on Mars in the infrared and millimetre range

Details Observations of CO on Mars in the infrared and millimetre range Observations of CO on Mars in the infrared and millimetre range

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290...55e&link_type=abstract

In ESA, Infrared Spectroscopy in Astronomy p 55-59(SEE N90-19084 11-89)

Astronomy and Astrophysics

Astronomy

Carbon Monoxide, Infrared Spectroscopy, Mars (Planet), Microwave Spectra, Bandwidth, Frequency Ranges, Infrared Spectra, Millimeter Waves, Planetary Atmospheres

Scientific paper

Millimeter observation of Mars in the lines of CO and (C-13)O is reported. Evidence of a significant enhancement of the (C-13)O line with respect to the CO line, is observed. Following this result, high resolution observations of the CO vibrational band at 4.7 microns are performed. Several martian lines of (C-12)O-16, (C-13)O, C(O-17) and C(O-18) are identified and analyzed. From the CO lines, a ratio CO/CO2 = 0.0015 is derived. The other isotopic lines seem to be significantly enhanced with respect to the terrestrial isotopic ratios of carbon and oxygen. Observations of CO and (C-13)O are recorded in the (1 to 0) and (2 to 1) lines at several positions of the martian disk.

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