Detection of argon in the coma of comet 67P/Churyumov-Gerasimenko

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dc.contributor.authorBalsiger, Hans
dc.contributor.authorAltwegg, Kathrin
dc.contributor.authorBar-Nun, Akiva
dc.contributor.authorBerthelier, Jean-Jacques
dc.contributor.authorBieler, Andre
dc.contributor.authorBochsler, Peter
dc.contributor.authorBriois, Christelle
dc.contributor.authorCalmonte, Ursina
dc.contributor.authorCombi, Michael
dc.contributor.authorDe Keyser, Johan
dc.contributor.authorEberhardt, Peter
dc.contributor.authorFiethe, Björn
dc.contributor.authorFuselier, Stephen A.
dc.contributor.authorGasc, Sébestien
dc.contributor.authorGombosi, Tamas I.
dc.contributor.authorHansen, Kenneth C.
dc.contributor.authorHässig, Myrtha
dc.contributor.authorJäckel, Annette
dc.contributor.authorKopp, Ernest
dc.contributor.authorKorth, Axel
dc.contributor.authorLe Roy, Lena
dc.contributor.authorMall, Urs
dc.contributor.authorMarty, Bernard
dc.contributor.authorMousis, Olivier
dc.contributor.authorOwen, Tobias
dc.contributor.authorRème, Henri
dc.contributor.authorRubin, Martin
dc.contributor.authorSémon, Thierry
dc.contributor.authorTzou, Chia-Yu
dc.contributor.authorWaite, J. Hunter
dc.contributor.authorWurz, Peter
dc.date.accessioned2016-03-22T02:50:48Z
dc.date.available2016-03-22T02:50:48Z
dc.date.issued2015-09
dc.description.abstractComets have been considered to be representative of icy planetesimals that may have contributed a significant fraction of the volatile inventory of the terrestrial planets. For example, comets must have brought some water to Earth. However, the magnitude of their contribution is still debated. We report the detection of argon and its relation to the water abundance in the Jupiter family comet 67P/Churyumov-Gerasimenko by in situ measurement of the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) mass spectrometer aboard the Rosetta spacecraft. Despite the very low intensity of the signal, argon is clearly identified by the exact determination of the mass of the isotope 36Ar and by the 36Ar/38Ar ratio. Because of time variability and spatial heterogeneity of the coma, only a range of the relative abundance of argon to water can be given. Nevertheless, this range confirms that comets of the type 67P/Churyumov-Gerasimenko cannot be the major source of Earth’s major volatiles.
dc.format.extent5
dc.identifier.doi10.1126/sciadv.1500377
dc.identifier.urihttp://hdl.handle.net/10125/39983
dc.language.isoen-US
dc.publisherScience Advances
dc.relation.urihttp://advances.sciencemag.org/content/1/8/e1500377
dc.rightsAttribution-NonCommercial 4.0 International (CC BY-NC 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.titleDetection of argon in the coma of comet 67P/Churyumov-Gerasimenko
dc.typeArticle
dc.type.dcmiText

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