Abundant molecular oxygen in the coma of comet 67P/Churyumov–Gerasimenko

A. Bieler (), K. Altwegg, H. Balsiger, A. Bar-Nun, J.-J. Berthelier, P. Bochsler, C. Briois, U. Calmonte, M. Combi, J. De Keyser, E. F. van Dishoeck, B. Fiethe, S. A. Fuselier, S. Gasc, T. I. Gombosi, K. C. Hansen, M. Hässig, A. Jäckel, E. Kopp, A. Korth, L. Le Roy, U. Mall, R. Maggiolo, B. Marty, O. Mousis, T. Owen, H. Rème, M. Rubin, T. Sémon, C.-Y. Tzou, J. H. Waite, C. Walsh and P. Wurz
Additional contact information
A. Bieler: University of Michigan
K. Altwegg: Physikalisches Institut, University of Bern
H. Balsiger: Physikalisches Institut, University of Bern
A. Bar-Nun: Tel-Aviv University
J.-J. Berthelier: LATMOS/IPSL-CNRS-UPMC-UVSQ
P. Bochsler: Physikalisches Institut, University of Bern
C. Briois: Laboratoire de Physique et Chimie de l’Environnement et de l’Espace (LPC2E), UMR 6115 CNRS – Université d’Orléans
U. Calmonte: Physikalisches Institut, University of Bern
M. Combi: University of Michigan
J. De Keyser: Belgian Institute for Space Aeronomy, BIRA-IASB
E. F. van Dishoeck: Leiden Observatory, Leiden University
B. Fiethe: Institute of Computer and Network Engineering (IDA), TU Braunschweig
S. A. Fuselier: Southwest Research Institute
S. Gasc: Physikalisches Institut, University of Bern
T. I. Gombosi: University of Michigan
K. C. Hansen: University of Michigan
M. Hässig: Physikalisches Institut, University of Bern
A. Jäckel: Physikalisches Institut, University of Bern
E. Kopp: Physikalisches Institut, University of Bern
A. Korth: Max-Planck-Institut für Sonnensystemforschung
L. Le Roy: Center for Space and Habitability, University of Bern
U. Mall: Max-Planck-Institut für Sonnensystemforschung
R. Maggiolo: Belgian Institute for Space Aeronomy, BIRA-IASB
B. Marty: Centre de Recherches Pétrographiques et Géochimiques, CRPG-CNRS, Université de Lorraine
O. Mousis: Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326
T. Owen: Institute for Astronomy, University of Hawaii
H. Rème: Université de Toulouse–UPS-OMP–IRAP
M. Rubin: Physikalisches Institut, University of Bern
T. Sémon: Physikalisches Institut, University of Bern
C.-Y. Tzou: Physikalisches Institut, University of Bern
J. H. Waite: Southwest Research Institute
C. Walsh: Leiden Observatory, Leiden University
P. Wurz: Physikalisches Institut, University of Bern

Nature, 2015, vol. 526, issue 7575, 678-681

Abstract: In situ measurement of O2 in the coma of comet 67P/Churyumov–Gerasimenko shows local abundances ranging from one per cent to ten per cent relative to H2O; the spatial and temporal uniformity of the O2/H2O ratio suggests that primordial O2 was incorporated into the nucleus during the comet’s formation.

Date: 2015
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DOI: 10.1038/nature15707

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