Journal articles
The oxygen isotopic composition (18O/16O) in the dust of comet 67P/Churyumov-Gerasimenko measured by COSIMA on-board Rosetta
Abstract : The oxygen isotopic ratio 18O/16O has been measured in cometary gas for a wide variety of comets, but the only measurements in cometary dust were performed by the Stardust cometary sample return mission. Most such measurements find a value of the ratio that is consistent with Vienna Standard Mean Ocean Water (VSMOW) within errors. In this work we present the result of a measurement, using the COSIMA (the COmetary Secondary Ion Mass Analyser) instrument on the Rosetta orbiter, of the oxygen isotopic ratio in dust from Comet 67P/Churyumov-Gerasimenko. Measuring the 18O/16O ratio with COSIMA is challenging for a number of reasons, but it is possible with a reasonable degree of precision. We find a result of 2.00 × 10−3 ± 1.2 × 10−4, which is consistent within errors with VSMOW.
Cited literature [41 references]
https://hal-insu.archives-ouvertes.fr/insu-02002394
Contributor : Nathalie Pothier <>
Submitted on : Friday, March 8, 2019 - 2:32:05 PM
Last modification on : Tuesday, April 28, 2020 - 10:38:07 AM
Document(s) archivé(s) le : Monday, June 10, 2019 - 3:43:25 PM
Contributor : Nathalie Pothier <>
Submitted on : Friday, March 8, 2019 - 2:32:05 PM
Last modification on : Tuesday, April 28, 2020 - 10:38:07 AM
Document(s) archivé(s) le : Monday, June 10, 2019 - 3:43:25 PM
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