Proc. IAU volume 13, issue S332, P187-195 2017 DOI: 10.1017/s1743921317007414 View full text
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Vianney Taquet, Kenji Furuya, Catherine Walsh, Ewine F. van Dishoeck

Abstract: Abstract. Molecular oxygen, O2, was recently detected in comet 67P by the ROSINA instrument on board the Rosetta spacecraft with a surprisingly high abundance of 4% relative to H2O, making O2 the fourth most abundant in comet 67P. Other volatile species with similar volatility, such as molecular nitrogen N2, were also detected by Rosetta, but with much lower abundances and much weaker correlations with water. Here, we investigate the chemical and physical origin of O2 and other volatile species using the new …

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