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Ocean-like water in the Jupiter-family comet 103P/Hartley 2

Author

Listed:
  • Paul Hartogh

    (Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Str. 2)

  • Dariusz C. Lis

    (California Institute of Technology)

  • Dominique Bockelée-Morvan

    (LESIA-Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen)

  • Miguel de Val-Borro

    (Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Str. 2)

  • Nicolas Biver

    (LESIA-Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen)

  • Michael Küppers

    (Rosetta Science Operations Centre, European Space Astronomy Centre, 28691 Villanueva de la Cañada)

  • Martin Emprechtinger

    (California Institute of Technology)

  • Edwin A. Bergin

    (University of Michigan)

  • Jacques Crovisier

    (LESIA-Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen)

  • Miriam Rengel

    (Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Str. 2)

  • Raphael Moreno

    (LESIA-Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen)

  • Slawomira Szutowicz

    (Space Research Centre, Polish Academy of Sciences)

  • Geoffrey A. Blake

    (California Institute of Technology)

Abstract

A drop in the ocean Earth's bulk composition is similar to that of a group of oxygen-poor meteorites called enstatite chondrites, thought to have formed in the early solar nebula. This leads to the suggestion that proto-Earth was dry, and that volatiles including water were delivered by asteroid and comet impacts. The deuterium-to-hydrogen (D/H) ratios measured in six Oort cloud comets are much higher than on Earth, however, apparently ruling out a dominant role for such bodies. Now the Herschel Space Telescope has been used to determine the D/H ratio in the Kuiper belt comet 103P/Hartley 2. The ratio is Earth-like, suggesting that this population of comets may have contributed to Earth's ocean waters.

Suggested Citation

  • Paul Hartogh & Dariusz C. Lis & Dominique Bockelée-Morvan & Miguel de Val-Borro & Nicolas Biver & Michael Küppers & Martin Emprechtinger & Edwin A. Bergin & Jacques Crovisier & Miriam Rengel & Raphael, 2011. "Ocean-like water in the Jupiter-family comet 103P/Hartley 2," Nature, Nature, vol. 478(7368), pages 218-220, October.
    • Handle: RePEc:nat:nature:v:478:y:2011:i:7368:d:10.1038_nature10519
    DOI: 10.1038/nature10519
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