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    67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio

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    Altwegg(2015).pdf (529.9Kb)
    Authors
    Altwegg, K.
    Balsiger, H.
    Bar-Nun, A.
    Berthelier, J.J.
    Bieler, A.
    Bochsler, P.
    Briois, C.
    Calmonte, U.
    Combi, M.
    De Keyser, J.
    Eberhardt, P.
    Fiethe, B.
    Fuselier, S.
    Gasc, S.
    Gombosi, T.I.
    Hansen, K.C.
    Hassig, M.
    Jackel, A.
    Kopp, E.
    Korth, A.
    LeRoy, L.
    Mall, U.
    Marty, B.
    Mousis, O.
    Neefs, E.
    Owen, T.
    Reme, H.
    Rubin, M.
    Semon, T.
    Tzou, C.-T.
    Wait, H.
    Wurz, P.
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    Discipline
    Natural sciences
    Audience
    Scientific
    Date
    2015
    Metadata
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    Description
    The provenance of water and organic compounds on Earth and other terrestrial planets has been discussed for a long time without reaching a consensus. One of the best means to distinguish between different scenarios is by determining the deuterium-to-hydrogen (D/H) ratios in the reservoirs for comets and Earth’s oceans. Here, we report the direct in situ measurement of the D/H ratio in the Jupiter family comet 67P/Churyumov-Gerasimenko by the ROSINA mass spectrometer aboard the European Space Agency’s Rosetta spacecraft, which is found to be (5.3 ± 0.7) × 10−4—that is, approximately three times the terrestrial value. Previous cometary measurements and our new finding suggest a wide range of D/H ratios in the water within Jupiter family objects and preclude the idea that this reservoir is solely composed of Earth ocean–like water.
    Citation
    Altwegg, K.; Balsiger, H.; Bar-Nun, A.; Berthelier, J.J.; Bieler, A.; Bochsler, P.; Briois, C.; Calmonte, U.; Combi, M.; De Keyser, J.; Eberhardt, P.; Fiethe, B.; Fuselier, S.; Gasc, S.; Gombosi, T.I.; Hansen, K.C.; Hassig, M.; Jackel, A.; Kopp, E.; Korth, A.; LeRoy, L.; Mall, U.; Marty, B.; Mousis, O.; Neefs, E.; Owen, T.; Reme, H.; Rubin, M.; Semon, T.; Tzou, C.-T.; Wait, H.; Wurz, P. (2015). 67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio. , Science, Vol. 347, Issue 6220, 1261952, DOI: 10.1126/science.1257377.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/2790
    doi: http://dx.doi.org/10.1126/science.1257377
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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