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Seasonal exposure of carbon dioxide ice on the nucleus of comet 67P/Churyumov-Gerasimenko.
Filacchione, G; Raponi, A; Capaccioni, F; Ciarniello, M; Tosi, F; Capria, M T; De Sanctis, M C; Migliorini, A; Piccioni, G; Cerroni, P; Barucci, M A; Fornasier, S; Schmitt, B; Quirico, E; Erard, S; Bockelee-Morvan, D; Leyrat, C; Arnold, G; Mennella, V; Ammannito, E; Bellucci, G; Benkhoff, J; Bibring, J P; Blanco, A; Blecka, M I; Carlson, R; Carsenty, U; Colangeli, L; Combes, M; Combi, M; Crovisier, J; Drossart, P; Encrenaz, T; Federico, C; Fink, U; Fonti, S; Fulchignoni, M; Ip, W-H; Irwin, P; Jaumann, R; Kuehrt, E; Langevin, Y; Magni, G; McCord, T; Moroz, L; Mottola, S; Palomba, E; Schade, U; Stephan, K; Taylor, F.
Affiliation
  • Filacchione G; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy. gianrico.filacchione@iaps.inaf.it.
  • Raponi A; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Capaccioni F; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Ciarniello M; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Tosi F; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Capria MT; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • De Sanctis MC; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Migliorini A; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Piccioni G; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Cerroni P; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Barucci MA; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Fornasier S; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Schmitt B; Université Grenoble Alpes, CNRS, Institut de Planetologie et d'Astrophysique de Grenoble, Grenoble, France.
  • Quirico E; Université Grenoble Alpes, CNRS, Institut de Planetologie et d'Astrophysique de Grenoble, Grenoble, France.
  • Erard S; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Bockelee-Morvan D; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Leyrat C; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Arnold G; Institute for Planetary Research, DLR (Deutschen Zentrums für Luft- und Raumfahrt), Berlin, Germany.
  • Mennella V; INAF Osservatorio di Capodimonte, Naples, Italy.
  • Ammannito E; Department of Earth, Planetary, and Space Sciences, University of California-Los Angeles, 603 Charles Young Drive, Los Angeles, CA 90095-1567, USA.
  • Bellucci G; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Benkhoff J; ESA (European Space Agency), European Space Research and Technology Centre, Noordwjik, Netherlands.
  • Bibring JP; Institut d'Astrophysique Spatial, CNRS, Orsay, France.
  • Blanco A; Dipartimento di Matematica e Fisica "Ennio De Giorgi," Università del Salento, Lecce, Italy.
  • Blecka MI; Space Research Centre, Polish Academy of Sciences, Warsaw, Poland.
  • Carlson R; NASA JPL (Jet Propulsion Laboratory), California Institute of Technology, Pasadena, CA 91109, USA.
  • Carsenty U; Université Grenoble Alpes, CNRS, Institut de Planetologie et d'Astrophysique de Grenoble, Grenoble, France.
  • Colangeli L; ESA (European Space Agency), European Space Research and Technology Centre, Noordwjik, Netherlands.
  • Combes M; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Combi M; Space Physics Research Laboratory, The University of Michigan, Ann Arbor, MI 48109, USA.
  • Crovisier J; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Drossart P; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Encrenaz T; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Federico C; Università di Perugia, Perugia, Italy.
  • Fink U; Lunar Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA.
  • Fonti S; Dipartimento di Matematica e Fisica "Ennio De Giorgi," Università del Salento, Lecce, Italy.
  • Fulchignoni M; Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique, Observatoire de Paris, Paris Sciences and Letters Research University, CNRS (Centre National de la Recherche Scientifique), Sorbonne Universités, UPMC (Université Pierre et Marie Curie) Université Paris 06, Université Paris Didero
  • Ip WH; National Central University, Taipei, Taiwan.
  • Irwin P; Departement of Physics, Oxford University, Oxford, UK.
  • Jaumann R; Institute for Planetary Research, DLR (Deutschen Zentrums für Luft- und Raumfahrt), Berlin, Germany.
  • Kuehrt E; Institute for Planetary Research, DLR (Deutschen Zentrums für Luft- und Raumfahrt), Berlin, Germany.
  • Langevin Y; Institut d'Astrophysique Spatial, CNRS, Orsay, France.
  • Magni G; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • McCord T; Bear Fight Institute, Winthrop, WA 98862, USA.
  • Moroz L; Institute for Planetary Research, DLR (Deutschen Zentrums für Luft- und Raumfahrt), Berlin, Germany.
  • Mottola S; Institute for Planetary Research, DLR (Deutschen Zentrums für Luft- und Raumfahrt), Berlin, Germany.
  • Palomba E; INAF-IAPS (Istituto Nazionale di AstroFisica-Istituto di Astrofisica e Planetologia Spaziali), Rome, Italy.
  • Schade U; Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany.
  • Stephan K; Institute for Planetary Research, DLR (Deutschen Zentrums für Luft- und Raumfahrt), Berlin, Germany.
  • Taylor F; Departement of Physics, Oxford University, Oxford, UK.
Science ; 354(6319): 1563-1566, 2016 12 23.
Article in En | MEDLINE | ID: mdl-27856846
ABSTRACT
Carbon dioxide (CO2) is one of the most abundant species in cometary nuclei, but because of its high volatility, CO2 ice is generally only found beneath the surface. We report the infrared spectroscopic identification of a CO2 ice-rich surface area located in the Anhur region of comet 67P/Churyumov-Gerasimenko. Spectral modeling shows that about 0.1% of the 80- by 60-meter area is CO2 ice. This exposed ice was observed a short time after the comet exited local winter; following the increased illumination, the CO2 ice completely disappeared over about 3 weeks. We estimate the mass of the sublimated CO2 ice and the depth of the eroded surface layer. We interpret the presence of CO2 ice as the result of the extreme seasonal changes induced by the rotation and orbit of the comet.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2016 Type: Article Affiliation country: Italy
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2016 Type: Article Affiliation country: Italy