A comparison between the two lobes of comet 67P/Churyumov–Gerasimenko based on D/H ratios in H2O measured with the Rosetta/ROSINA DFMS
| Autor: | Michael R. Combi, Thierry Sémon, Susanne F. Wampfler, Yinsi Shou, Peter Wurz, Hans Balsiger, Martin Rubin, Kenneth C. Hansen, Isaac R. H. G. Schroeder I, Valeriy Tenishev, Johan De Keyser, Tamas I. Gombosi, S. A. Fuselier, Kathrin Altwegg, Björn Fiethe, Jean-Jacques Berthelier |
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| Přispěvatelé: | Physikalisches Institut [Bern], Universität Bern [Bern], PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Department of Climate and Space Sciences and Engineering (CLaSP), University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Institute of Computer and Network Engineering [Braunschweig] (IDA), Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig], The University of Texas at San Antonio (UTSA), Southwest Research Institute [San Antonio] (SwRI), Center for Space and Habitability (CSH), University of Bern |
| Rok vydání: | 2019 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Comet Astronomy and Astrophysics Astrophysics 01 natural sciences On board medicine.anatomical_structure [SDU]Sciences of the Universe [physics] Space and Planetary Science Homogeneous 0103 physical sciences medicine 010303 astronomy & astrophysics Nucleus 0105 earth and related environmental sciences |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 489, pp.4734-4740. ⟨10.1093/mnras/stz2482⟩ |
| ISSN: | 1365-2966 0035-8711 |
| Popis: | The nucleus of the Jupiter-family comet 67P/Churyumov–Gerasimenko was discovered to be bi-lobate in shape when the European Space Agency spacecraft Rosetta first approached it in 2014 July. The bi-lobate structure of the cometary nucleus has led to much discussion regarding the possible manner of its formation and on how the composition of each lobe might compare with that of the other. During its two-year-long mission from 2014 to 2016, Rosetta remained in close proximity to 67P/Churyumov–Gerasimenko, studying its coma and nucleus in situ. Based on lobe-specific measurements of HDO and H2O performed with the ROSINA Double Focusing Mass Spectrometer (DFMS) on board Rosetta, the deuterium-to-hydrogen (D/H) ratios in water from the two lobes can be compared. No appreciable difference was observed, suggesting that both lobes formed in the same region and are homogeneous in their D/H ratios. |
| Databáze: | OpenAIRE |
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