Journal articles
Xenon isotopes in 67P/Churyumov-Gerasimenko show that comets contributed to Earth's atmosphere
Abstract : The origin of cometary matter and the potential contribution of comets to inner-planet atmospheres are long-standing problems. During a series of dedicated low-altitude orbits, the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) on the Rosetta spacecraft analyzed the isotopes of xenon in the coma of comet 67P/Churyumov-Gerasimenko. The xenon isotopic composition shows deficits in heavy xenon isotopes and matches that of a primordial atmospheric component. The present-day Earth atmosphere contains 22 ± 5% cometary xenon, in addition to chondritic (or solar) xenon.
Cited literature [27 references]
https://hal-insu.archives-ouvertes.fr/insu-01670669
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Submitted on : Friday, March 6, 2020 - 3:49:27 PM
Last modification on : Monday, July 4, 2022 - 10:25:32 AM
Long-term archiving on: : Sunday, June 7, 2020 - 3:14:53 PM
Contributor : Nathalie ROUCHON Connect in order to contact the contributor
Submitted on : Friday, March 6, 2020 - 3:49:27 PM
Last modification on : Monday, July 4, 2022 - 10:25:32 AM
Long-term archiving on: : Sunday, June 7, 2020 - 3:14:53 PM
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