D/H mapping on Mars with SOFIA at autumn equinox
Résumé
This abstract presents preliminary results of a new observing campaignperformed with the EXES imaging spectrometer aboard the StratosphericObservatory for Infrared Astronomy (SOFIA). Data were recorded nearautumn equinox (October 2018, Ls = 272°). The disk-integrated value ofD/H is 4.1 times the terrestrial value (VSMOW), in agreement withprevious values obtained with EXES for different seasons. We see noevidence for seasonal variations for the global D/H value on Mars.