67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio-Reference-Cited by-同舟云学术

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

Published:2015-01-23 Issue:6220 Volume:347 Page:
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Altwegg K.¹,Balsiger H.¹,Bar-Nun A.²,Berthelier J. J.³,Bieler A.¹⁴,Bochsler P.¹,Briois C.⁵,Calmonte U.¹,Combi M.⁴,De Keyser J.⁶,Eberhardt P.¹,Fiethe B.⁷,Fuselier S.⁸,Gasc S.¹,Gombosi T. I.⁴,Hansen K.C.⁴,Hässig M.¹⁸,Jäckel A.¹,Kopp E.¹,Korth A.⁹,LeRoy L.¹,Mall U.⁹,Marty B.¹⁰,Mousis O.¹¹,Neefs E.⁶,Owen T.¹²,Rème H.¹³¹⁴,Rubin M.¹,Sémon T.¹,Tzou C.-Y.¹,Waite H.⁸,Wurz P.¹

Affiliation:

1. Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

2. Department of Geosciences, Tel-Aviv University, Ramat-Aviv, Tel-Aviv, Israel.

3. Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), 4 Avenue de Neptune, F-94100 Saint-Maur, France.

4. Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, 2455 Hayward, Ann Arbor, MI 48109, USA.

5. Laboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E), UMR 6115 CNRS–Université d'Orléans, France.

6. Space Physics Division, Belgisch Instituut voor Ruimte-Aëronomie (BIRA)–Institut d’Aéronomie Spatiale de Belgique (IASB), Ringlaan 3, B-1180 Brussels, Belgium.

7. Institute of Computer and Network Engineering (IDA), Technicsche Universität Braunschweig, Hans-Sommer-Straße 66, D-38106 Braunschweig, Germany.

8. Department of Space Science, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78228, USA.

9. Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany.

10. Centre de Recherches Pétrographiques et Géochimiques, Centre de Recherches Pétrographiques et Géochimiques (CRPG)–CNRS, Université de Lorraine, 15 rue Notre Dame des Pauvres, BP 20, 54501 Vandoeuvre lès Nancy, France.

11. Université de Franche-Comté, Institut Univers, Transport, Interfaces, Nanostructures, Atmosphère et Environnement, Molécules (UTINAM), CNRS/Institut National des Sciences de l’Univers (INSU), UMR 6213 Besançon Cedex, France.

12. Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA.

13. Université de Toulouse, Université Paul Sabatier (UPS)–Observatoire Midi-Pyrénées (OMP), Institut de Recherche en Astrophysique et Planétologie (IRAP), Toulouse, France.

14. CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346, F-31028 Toulouse cedex 4, France.

Abstract

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.

Funder

Swiss National Science Foundation

Max Planck Society

Belgian Science Policy Office

Centre National d'Etudes Spatiales

European Research Council

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference28 articles.

1. The origins and concentrations of water, carbon, nitrogen and noble gases on Earth