| HAL : hal-00641442, version 1 |
| Code Bibliographique ADS : 2011Sci...334..487S |
| DOI : 10.1126/science.1207325 |
| Fiche détaillée | Récupérer au format |
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| Science 334, 6055 (2011) 487-490 |
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| Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System |
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| H. Sierks 1P. Lamy 2 |
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| (2011) |
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| Images obtained by the Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) cameras onboard the Rosetta spacecraft reveal that asteroid 21 Lutetia has a complex geology and one of the highest asteroid densities measured so far, 3.4 ± 0.3 grams per cubic centimeter. The north pole region is covered by a thick layer of regolith, which is seen to flow in major landslides associated with albedo variation. Its geologically complex surface, ancient surface age, and high density suggest that Lutetia is most likely a primordial planetesimal. This contrasts with smaller asteroids visited by previous spacecraft, which are probably shattered bodies, fragments of larger parents, or reaccumulated rubble piles. |
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| 1 : | Max-Planck-Institut für Sonnensystemforschung |
| Max-Planck-Institut für sonnensystemforschung | |
| 2 : | Laboratoire d'Astrophysique de Marseille (LAM) |
| CNRS : UMR6110 – INSU – Université de Provence - Aix-Marseille I | |
| 3 : | Department of Astronomy, University of Padova |
| University of Padova | |
| 4 : | Centro Interdipartimentale di Studi e Attività Spaziali (CISAS) |
| Universita di Padova | |
| 5 : | European Space and Technology Centre/ESA (ESTEC/ESA) |
| ESA | |
| 6 : | Department of Physics and Astronomy, Uppsala University |
| Uppsala University | |
| 7 : | Instituto de Astrofisica de Andalucia |
| CSIC | |
| 8 : | Department of Astronomy, University of Maryland |
| University of Maryland | |
| 9 : | Department of Mechanical Engineering |
| University of Padova | |
| 10 : | Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) |
| CNRS : UMR8109 – INSU – Observatoire de Paris – Université Pierre et Marie Curie [UPMC] - Paris VI – Université Paris VII - Paris Diderot | |
| 11 : | Observatoire de Paris - Site de Paris (OP) |
| CNRS – INSU – Observatoire de Paris | |
| 12 : | Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) |
| CNRS : UMR8190 – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – INSU | |
| 13 : | Institut Pierre-Simon-Laplace (IPSL) |
| CNRS : FR636 – Institut de recherche pour le développement [IRD] – CEA – CNES – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – Ecole normale supérieure de Paris - ENS Paris | |
| 14 : | Université Versailles Saint-Quentin en Yvelines (UVSQ) |
| Université de Versailles Saint-Quentin-en-Yvelines | |
| 15 : | European Space Astronomy Centre |
| European Space Astronomy Centre | |
| 16 : | Osservatorio Astronomico di Padova |
| INAF | |
| 17 : | Osservatorio Astronomico de Trieste |
| Osservatorio Astronomico de Trieste | |
| 18 : | Planetary Science Institute |
| Planetary Science Institute | |
| 19 : | Institute for Space Science |
| National Central University | |
| 20 : | Department of Mathematics |
| Tampere University of Technology | |
| 21 : | Institute for Geophysics and Extraterrestrial Physics |
| Institute for Geophysics and Extraterrestrial Physics | |
| 22 : | Institut für Planetenforschung |
| Deutsches Zentrum fuer Luft- und Raumfahrt | |
| 23 : | Observatoire de la Cote d'Azur (OCA) |
| CNRS : UMS2202 | |
| 24 : | Department of Physics |
| University of Padova | |
| 25 : | Unisersität zu Köln |
| Unisersität zu Köln | |
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| Domaine | : | Planète et Univers/Astrophysique/Planétologie et astrophysique de la terre Physique/Astrophysique/Planétologie et astrophysique de la terre Planète et Univers/Astrophysique/Instrumentation et méthodes pour l'astrophysique Physique/Astrophysique/Instrumentation et méthodes pour l'astrophysique |
| hal-00641442, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00641442 | |
| oai:hal.archives-ouvertes.fr:hal-00641442 | |
| Contributeur : Catherine Cardon | |
| Soumis le : Mardi 15 Novembre 2011, 18:07:08 | |
| Dernière modification le : Mercredi 13 Mars 2013, 13:44:55 | |