Insight into the origin of cometary ices from Rosetta/ROSINA mass spectrometer data

Abstract

Here we review some of the major findings of the mass spectrometer suite ROSINA on board of ESA's Rosetta spacecraft to comet 67P/Churyumov-Gerasimenko. For more than 2 years, ROSINA continuously measured the composition of the gases sublimating from the comet's nucleus. ROSINA measurements provided insight into the origin of the ices in 67P/Churyumov-Gerasimenko. The obtained molecular, elemental, and isotope abundances revealed a composition more complex than previously known. Furthermore, a subset of these measurements indicate that a substantial fraction of the molecules incorporated into the comet predate the formation of the solar system.

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• Elemental and molecular abundances in comet 67P/Churyumov-Gerasimenko
• Cometary Chemistry and the Origin of Icy Solar System Bodies, the view after Rosetta
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• Krypton isotopes and noble gas abundances in the coma of comet 67P/Churyumov-Gerasimenko
• The gas production of 14 species from comet 67P/Churyumov-Gerasimenko based on DFMS/COPS data from 2014-2016
• Origin of molecular oxygen in Comet 67P/Churyumov-Gerasimenko
• Volatile species in comet 67P/Churyumov-Gerasimenko -- investigating the link from the ISM to the terrestrial planets
• Molecular Oxygen in Oort Cloud Comet 1P/Halley
• Abundant ammonium hydrosulphide embedded in cometary dust grains
• Complex organic molecules in comets from remote-sensing observations at millimeter wavelengths
• High D/H ratios in water and alkanes in comet 67P/Churyumov-Gerasimenko measured with the Rosetta/ROSINA DFMS
• Prestellar grain-surface origins of deuterated methanol in comet 67P/Churyumov-Gerasimenko
• High D${}_2$O/HDO ratio in the inner regions of the low-mass protostar NGC1333 IRAS2A
• The recent dynamical history of comet 67P/Churyumov-Gerasimenko
• The ${}^{16}$O/${}^{18}$O ratio in Water in the Coma of Comet 67P / Churyumov-Gerasimenko measured with the Rosetta / ROSINA Double-Focusing Mass Spectrometer
• Evidence for depletion of heavy silicon isotopes at comet 67P/Churyumov-Gerasimenko
• Thermal H/D exchange in polar ice - deuteron scrambling in space
• Impact of radiogenic heating on the formation conditions of comet 67P/Churyumov-Gerasimenko
• Molecule dependent oxygen isotopic ratios in the coma of comet 67P/Churyumov-Gerasimenko