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Chemical highlights from the Rosetta mission

Published online by Cambridge University Press:  04 September 2018

Kathrin Altwegg Open the ORCID record for Kathrin Altwegg [Opens in a new window]  and
the ROSINA Team
Kathrin Altwegg
Affiliation:
Physikalisches Institut, University of Bern Sidlerstr. 5, CH-3012 Bern, Switzerland email: [email protected]
the ROSINA Team
Affiliation:
Physikalisches Institut, University of Bern Sidlerstr. 5, CH-3012 Bern, Switzerland email: [email protected]
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Abstract

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The overall goal of the ESA Rosetta mission was to help decipher the origin and evolution of our solar system. Looking at the chemical composition of comet 67P/Churyumov-Gerasimenko is one way of doing this. The amount of very volatile species found and the insight into their isotopic abundances show that at least some presolar ice has survived the formation of the solar system. It shows that the solar nebula was not homogenized in the region where comets formed. The D/H ratio in water furthermore indicates that Jupiter family comets and Oort cloud comets probably formed in the same regions and their difference is then purely due to their different dynamical history. The organics found in 67P are very diverse, with abundant CH- and CHO- bearing species. Sulphur bearing species like S3 and S4 and others show evidence of dust grain chemistry in molecular clouds.

Keywords

astrochemistrycomets: individual (67P/C-G)planetary systems: protoplanetary disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S332: Astrochemistry VII: Through the Cosmos from Galaxies to Planets , March 2017 , pp. 153 - 162
Copyright
Copyright © International Astronomical Union 2018 

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