Carbon isotopic enrichment in Titan's tholins? Implications for Titan's aerosols
| Autor: | Cyril Szopa, M.-J. Nguyen, François Raulin, J. M. Bernard, Guy Cernogora, Patrice Coll, G. Israel, Sylvie Derenne |
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| Přispěvatelé: | Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Service d'aéronomie (SA), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Biogéochimie et écologie des milieux continentaux (Bioemco), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Planétologie de Grenoble (LPG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2007 |
| Předmět: |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Haze 010504 meteorology & atmospheric sciences δ13C Chemistry Astronomy and Astrophysics Tholin Fractionation Atmospheric sciences 01 natural sciences Astrobiology Aerosol Chemical evolution symbols.namesake [SDU]Sciences of the Universe [physics] 13. Climate action Space and Planetary Science 0103 physical sciences symbols Titan (rocket family) 010303 astronomy & astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Planetary and Space Science Planetary and Space Science, Elsevier, 2007, 55 (13), pp.2010-2014. ⟨10.1016/j.pss.2007.04.010⟩ Planetary and Space Science, 2007, 55 (13), pp.2010-2014. ⟨10.1016/j.pss.2007.04.010⟩ |
| ISSN: | 0032-0633 |
| DOI: | 10.1016/j.pss.2007.04.010 |
| Popis: | Since the discovery of the main composition of Titan's atmosphere, many laboratory experiments have been carried out to reproduce its chemical evolution, particularly the formation of organic haze particles found throughout this atmosphere. Some of these simulations have produced solid products—referred to as Titan's tholins—that are assumed to have properties similar to those of Titan's aerosols. In the present work, we focus on the possible isotopic fractionation of carbon during the processes involved in the formation of Titan's tholins. Initial 12C/13C isotopic ratios measured on tholins made in the laboratory using cold plasma discharges are presented. Measurements of isotopic enhancement in 13C (δ13C), both on tholins and on the initial gas mixture (N2:CH4 (98:2)) used to produce them do not show any clear deficit or enrichment in 13C relative to 12C in the lab-made tholins compared to the initial gas mixture. Preliminary data recovered from the Aerosol Collector Pyrolyzer (ACP) experiment of the Huygens probe suggests that Titan's aerosols may also be exempt of carbon isotopic enrichment. This observation creates possibilities for deeper analysis of ACP experiment data. |
| Databáze: | OpenAIRE |
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