Chlorine-bearing species and the 37Cl/35Cl isotope ratio in the coma of comet 67P/Churyumov–Gerasimenko
| Autor: | Romain Maggiolo, Martin Rubin, Peter Wurz, Frederik Dhooghe, Emmanuel Jehin, Kathrin Altwegg, Nora Hänni, Gaël Cessateur, Johan De Keyser |
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| Rok vydání: | 2021 |
| Předmět: |
530 Physics
Comet Analytical chemistry chemistry.chemical_element Coma (optics) Astronomy & Astrophysics Mass spectrometry Chloride general [comets] SOLAR-SYSTEM DEPENDENCE medicine Chlorine PERCHLORATE ION Physics Science & Technology Isotope 520 Astronomy Isotopes of chlorine PROTOSTELLAR APATITE MANTLE Astronomy and Astrophysics 620 Engineering chemistry Space and Planetary Science Physical Sciences RESERVOIRS individual: 67P/Churyumov-Gerasimenko [comets] medicine.drug |
| Zdroj: | Dhooghe, Frederik; De Keyser, Johan; Hänni, Nora; Altwegg, Kathrin; Cessateur, Gaël; Jehin, Emmanuel; Maggiolo, Romain; Rubin, Martin; Wurz, Peter (2021). Chlorine-bearing species and the 37Cl/35Cl isotope ratio in the coma of comet 67P/Churyumov-Gerasimenko. Monthly notices of the Royal Astronomical Society, 508(1), pp. 1020-1032. Oxford University Press 10.1093/mnras/stab1732 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/stab1732 |
| Popis: | A full-mission analysis has been conducted of Cl-bearing species in the coma of comet 67P/Churyumov–Gerasimenko as detected by the Double Focusing Mass Spectrometer (DFMS) of Rosetta's ROSINA instrument. The isotope ratio of the two stable chlorine isotopes 37Cl/35Cl is found to be 0.336 ± 0.017, to be compared with the standard mean ocean chloride value of 0.320. The isotope ratio does not change appreciably throughout the mission. The Cl-bearing species fingerprint in DFMS indicates that there is at least one additional chlorine-bearing species in the coma next to HCl, CH3Cl, and NH4Cl. The identity of this volatile or semivolatile species is unknown at this time. |
| Databáze: | OpenAIRE |
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