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

  title={67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio},
  author={Kathrin Altwegg and Hans Balsiger and Akiva Bar-Nun and J. J. Berthelier and S{\'e}bastien Gasc and Phillip Bochsler and Christelle Briois and Ursina Calmonte and Michael R. Combi and Johan De Keyser and Peter Eberhardt and Bj{\"o}rn Fiethe and Steve Fuselier and Sebastien Gasc and Tamas I. Gombosi and Kenneth C. Hansen and M H{\"a}ssig and A J{\"a}ckel and Ernest Kopp and Axel Korth and Lise Leroy and Urs Mall and Bernard Marty and Olivier Mousis and E. Neefs and Tobias Owen and Henri R{\`e}me and Martin Rubin and Thierry S{\'e}mon and C.-Y. Tzou and Helen Waite and Peter Wurz},
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… CONTINUE READING
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