Atomic Oxygen Green and Red Emissions in the Comet 67P/Churyumov-Gerasimenko
Abstract:The first results of the ESA Rosetta mission, currently near comet 67P/Churyumov-Gerasimenko (67P), have given new insights on cometary formation. In particular, the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) sensor DFMS is studying the composition and evolution of the atmosphere of comet 67P during its trajectory in the solar system.
This contribution will present a coupled chemistry-emission model for atomic oxygen green (557.7 nm) and red-doublet (630, 636.4 nm) emission for comet 67P. We will emphasize on how the Green-to-Red ratio could be impacted by different neutral species within the comet’s atmosphere.