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Cometary science. On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko.
Sierks, Holger; Barbieri, Cesare; Lamy, Philippe L; Rodrigo, Rafael; Koschny, Detlef; Rickman, Hans; Keller, Horst Uwe; Agarwal, Jessica; A'Hearn, Michael F; Angrilli, Francesco; Auger, Anne-Therese; Barucci, M Antonella; Bertaux, Jean-Loup; Bertini, Ivano; Besse, Sebastien; Bodewits, Dennis; Capanna, Claire; Cremonese, Gabriele; Da Deppo, Vania; Davidsson, Björn; Debei, Stefano; De Cecco, Mariolino; Ferri, Francesca; Fornasier, Sonia; Fulle, Marco; Gaskell, Robert; Giacomini, Lorenza; Groussin, Olivier; Gutierrez-Marques, Pablo; Gutiérrez, Pedro J; Güttler, Carsten; Hoekzema, Nick; Hviid, Stubbe F; Ip, Wing-Huen; Jorda, Laurent; Knollenberg, Jörg; Kovacs, Gabor; Kramm, J Rainer; Kührt, Ekkehard; Küppers, Michael; La Forgia, Fiorangela; Lara, Luisa M; Lazzarin, Monica; Leyrat, Cédric; Lopez Moreno, Josè J; Magrin, Sara; Marchi, Simone; Marzari, Francesco; Massironi, Matteo; Michalik, Harald.
Afiliação
  • Sierks H; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany. sierks@mps.mpg.de.
  • Barbieri C; Department of Physics and Astronomy, University of Padova, 35122 Padova, Italy.
  • Lamy PL; Laboratoire d'Astrophysique de Marseille, UMR 7326, CNRS & Aix Marseille Université, 13388 Marseille Cedex 13, France.
  • Rodrigo R; Centro de Astrobiologia, CSIC-INTA,28850 Madrid, Spain. International Space Science Institute, 3012 Bern, Switzerland.
  • Koschny D; Scientific Support Office, European Space Research and Technology Centre/ESA, 2201 AZ Noordwijk ZH, Netherlands.
  • Rickman H; Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden. PAS Space Research Center, 00716 Warszawa, Poland.
  • Keller HU; Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig, 38106 Braunschweig, Germany. Deutsches Zentrum für Luft- und Raumfahrt, Institut für Planetenforschung, 12489 Berlin, Germany.
  • Agarwal J; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany.
  • A'Hearn MF; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany. Department of Astronomy, University of Maryland, College Park, MD 20742, USA. Akademie der Wissenschaften zu Göttingen, 37077 Göttingen, Germany.
  • Angrilli F; Department of Industrial Engineering, University of Padova, 35131 Padova, Italy.
  • Auger AT; Aix Marseille Université, CNRS, Laboratoire d'Astrophysique de Marseille, UMR 7326, 13388 Marseille, France.
  • Barucci MA; LESIA-Observatoire de Paris, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 92195 Meudon, France.
  • Bertaux JL; LATMOS, CNRS/UVSQ/IPSL, 78280 Guyancourt, France.
  • Bertini I; Centro di Ateneo di Studi ed Attività Spaziali "Giuseppe Colombo" (CISAS), University of Padova, 35131 Padova, Italy.
  • Besse S; Scientific Support Office, European Space Research and Technology Centre/ESA, 2201 AZ Noordwijk ZH, Netherlands.
  • Bodewits D; Department of Astronomy, University of Maryland, College Park, MD 20742, USA.
  • Capanna C; Aix Marseille Université, CNRS, Laboratoire d'Astrophysique de Marseille, UMR 7326, 13388 Marseille, France.
  • Cremonese G; INAF, Osservatorio Astronomico di Padova, 35122 Padova, Italy.
  • Da Deppo V; CNR-IFN UOS Padova LUXOR, 35131 Padova, Italy.
  • Davidsson B; Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden.
  • Debei S; Department of Industrial Engineering, University of Padova, 35131 Padova, Italy.
  • De Cecco M; University of Trento, 38100 Trento, Italy.
  • Ferri F; Centro di Ateneo di Studi ed Attività Spaziali "Giuseppe Colombo" (CISAS), University of Padova, 35131 Padova, Italy.
  • Fornasier S; LESIA-Observatoire de Paris, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 92195 Meudon, France.
  • Fulle M; INAF - Osservatorio Astronomico di Trieste, 34014 Trieste, Italy.
  • Gaskell R; Planetary Science Institute, Tucson, AZ 85719, USA.
  • Giacomini L; Centro di Ateneo di Studi ed Attività Spaziali "Giuseppe Colombo" (CISAS), University of Padova, 35131 Padova, Italy.
  • Groussin O; Aix Marseille Université, CNRS, Laboratoire d'Astrophysique de Marseille, UMR 7326, 13388 Marseille, France.
  • Gutierrez-Marques P; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany.
  • Gutiérrez PJ; Instituto de Astrofisica de Andalucia (CSIC), c/ Glorieta de la AstronomÌa s/n, 18008 Granada, Spain.
  • Güttler C; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany.
  • Hoekzema N; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany.
  • Hviid SF; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany. Deutsches Zentrum für Luft- und Raumfahrt, Institut für Planetenforschung, 12489 Berlin, Germany.
  • Ip WH; Graduate Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan. Space Science Institute, Macau University of Science and Technology, Macao, China.
  • Jorda L; Aix Marseille Université, CNRS, Laboratoire d'Astrophysique de Marseille, UMR 7326, 13388 Marseille, France.
  • Knollenberg J; Deutsches Zentrum für Luft- und Raumfahrt, Institut für Planetenforschung, 12489 Berlin, Germany.
  • Kovacs G; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany.
  • Kramm JR; Max-Planck-Institut für Sonnensystemforschung, 37077 Göttingen, Germany.
  • Kührt E; Deutsches Zentrum für Luft- und Raumfahrt, Institut für Planetenforschung, 12489 Berlin, Germany.
  • Küppers M; Operations Department, European Space Astronomy Centre/ESA, 28691 Villanueva de la Canada, Madrid, Spain.
  • La Forgia F; Department of Physics and Astronomy, University of Padova, 35122 Padova, Italy.
  • Lara LM; Instituto de Astrofisica de Andalucia (CSIC), c/ Glorieta de la AstronomÌa s/n, 18008 Granada, Spain.
  • Lazzarin M; Department of Physics and Astronomy, University of Padova, 35122 Padova, Italy.
  • Leyrat C; LESIA-Observatoire de Paris, CNRS, Université Pierre et Marie Curie, Université Paris Diderot, 92195 Meudon, France.
  • Lopez Moreno JJ; Instituto de Astrofisica de Andalucia (CSIC), c/ Glorieta de la AstronomÌa s/n, 18008 Granada, Spain.
  • Magrin S; Department of Physics and Astronomy, University of Padova, 35122 Padova, Italy.
  • Marchi S; Solar System Exploration Research, Virtual Institute, Southwest Research Institute, Boulder, CO 80302, USA.
  • Marzari F; Department of Physics and Astronomy, University of Padova, 35122 Padova, Italy.
  • Massironi M; Centro di Ateneo di Studi ed Attività Spaziali "Giuseppe Colombo" (CISAS), University of Padova, 35131 Padova, Italy. Dipartimento di Geoscienze, University of Padova, 35131 Padova, Italy.
  • Michalik H; Institut für Datentechnik und Kommunikationsnetze der TU Braunschweig, 38106 Braunschweig, Germany.
Science ; 347(6220): aaa1044, 2015 Jan 23.
Article em En | MEDLINE | ID: mdl-25613897
Images from the OSIRIS scientific imaging system onboard Rosetta show that the nucleus of 67P/Churyumov-Gerasimenko consists of two lobes connected by a short neck. The nucleus has a bulk density less than half that of water. Activity at a distance from the Sun of >3 astronomical units is predominantly from the neck, where jets have been seen consistently. The nucleus rotates about the principal axis of momentum. The surface morphology suggests that the removal of larger volumes of material, possibly via explosive release of subsurface pressure or via creation of overhangs by sublimation, may be a major mass loss process. The shape raises the question of whether the two lobes represent a contact binary formed 4.5 billion years ago, or a single body where a gap has evolved via mass loss.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Science Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Alemanha País de publicação: Estados Unidos
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Science Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Alemanha País de publicação: Estados Unidos