The Agilkia boulders/pebbles size-frequency distributions: OSIRIS and ROLIS joint observations of 67P surface
| Autor: | M. F. A'Hearn, Maurizio Pajola, Olivier Groussin, Detlef Koschny, M. A. Barucci, Nicolas Thomas, Björn Davidsson, H.-G. Grothues, Cecilia Tubiana, M. R. El Maarry, Cesare Barbieri, Clement Feller, Holger Sierks, Jessica Agarwal, Frank Scholten, Monica Lazzarin, Carsten Güttler, Wing-Huen Ip, Jean-Baptiste Vincent, Ivano Bertini, Laurent Jorda, Giampiero Naletto, Jakob Deller, Zhong-Yi Lin, Francesco Marzari, R. Rodrigo, J. P. Bibring, Matteo Massironi, Frank Preusker, Stefano Mottola, Stubbe F. Hviid, A. Gicquel, Marco Fulle, Marc Hofmann, Michael Küppers, F. La Forgia, P. J. Gutiérrez, M. De Cecco, Nilda Oklay, Antoine Pommerol, Harald Michalik, Maximilian Hamm, Ralf Jaumann, Steve Boudreault, V. Da Deppo, Harald Michaelis, H. U. Keller, Hans Rickman, Alice Lucchetti, J. L. Bertaux, J. J. Lopez Moreno, Philippe Lamy, Gabriele Arnold, Jörg Knollenberg, Sonia Fornasier, J.-R. Kramm, Stefano Debei, Ekkehard Kührt, L. M. Lara, Gabriele Cremonese |
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| Přispěvatelé: | NASA Ames Research Center (ARC), Centro di Ateneo di Studi e Attività Spaziali 'Giuseppe Colombo' (CISAS), Universita degli Studi di Padova, DLR Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR), INAF - Osservatorio Astronomico di Trieste (OAT), Istituto Nazionale di Astrofisica (INAF), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Max-Planck-Institut für Sonnensystemforschung (MPS), Max-Planck-Gesellschaft, Department of Information Engineering [Padova] (DEI), CNR Institute for Photonics and Nanotechnologies (IFN), Consiglio Nazionale delle Ricerche [Roma] (CNR), Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institute of Geological Sciences [Berlin], Department of Earth Sciences [Berlin], Free University of Berlin (FU)-Free University of Berlin (FU), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica e Astronomia 'Galileo Galilei', Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Centro de Astrobiologia [Madrid] (CAB), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Instituto Nacional de Técnica Aeroespacial (INTA), International Space Science Institute [Bern] (ISSI), European Space Research and Technology Centre (ESTEC), European Space Agency (ESA), Space Research Centre of Polish Academy of Sciences (CBK), Polska Akademia Nauk = Polish Academy of Sciences (PAN), Department of Physics and Astronomy [Uppsala], Uppsala University, Institut für Geophysik und Extraterrestrische Physik [Braunschweig] (IGEP), Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig], Department of Astronomy [College Park], University of Maryland [College Park], University of Maryland System-University of Maryland System, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Padova (OAPD), Department of Industrial Engineering [Padova], Università degli Studi di Trento (UNITN), Physikalisches Institut [Bern], Universität Bern [Bern], Instituto de Astrofísica de Andalucía (IAA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Institute of Space Science [Taiwan], National Central University [Taiwan] (NCU), Operations Department (ESAC), European Space Astronomy Centre (ESAC), European Space Agency (ESA)-European Space Agency (ESA), Dipartimento di Geoscienze [Padova], Institute of Computer and Network Engineering [Braunschweig] (IDA), Ministerio de Economía y Competitividad (España), Agenzia Spaziale Italiana, Centre National de la Recherche Scientifique (France), Swedish National Space Board, European Space Agency, German Centre for Air and Space Travel, Università degli Studi di Padova = University of Padua (Unipd), Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research (MPS), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Instituto Nacional de Técnica Aeroespacial (INTA)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Agence Spatiale Européenne = European Space Agency (ESA), Universität Bern [Bern] (UNIBE), Agence Spatiale Européenne = European Space Agency (ESA)-Agence Spatiale Européenne = European Space Agency (ESA), California Institute of Technology (CALTECH)-NASA |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Surface (mathematics)
methods: data analysis –methods: statistical – comets: individual: 67P C-G 010504 meteorology & atmospheric sciences Infrared 530 Physics statistical [methods] [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] Individual Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Methods statistical individual: 67P C-G [comets] Astronomi astrofysik och kosmologi 0103 physical sciences Size frequency data analysis [methods] 67P C-G Methods Astronomy Astrophysics and Cosmology 14. Life underwater 010303 astronomy & astrophysics Joint (geology) Astrophysics::Galaxy Astrophysics 0105 earth and related environmental sciences Remote sensing Physics Statistical-comets biology methods: data Analysis methods: statistical comets: individual: 67P C G 520 Astronomy Astronomy Astronomy and Astrophysics data analysis-methods biology.organism_classification 620 Engineering Space and Planetary Science Computer Science::Computer Vision and Pattern Recognition Astrophysics::Earth and Planetary Astrophysics Osiris |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 462 (Suppl. 1), pp.S242-S252. ⟨10.1093/mnras/stw2720⟩ Digital.CSIC. Repositorio Institucional del CSIC instname Monthly notices of the Royal Astronomical Society 462 (2016): S242–S252. doi:10.1093/mnras/stw2720 info:cnr-pdr/source/autori:Pajola, M.; Mottola, S.; Hamm, M.; Fulle, M.; Davidsson, B.; Guttler, C.; Sierks, H.; Naletto, G.; Arnold, G.; Grothues, H. G.; Jaumann, R.; Michaelis, H.; Bibring, J. P.; Barbieri, C.; Lamy, P. L.; Rodrigo, R.; Koschny, D.; Rickman, H.; Keller, H. U.; Agarwal, J.; A'Hearn, M. F.; Barucci, M. A.; Bertaux, J. L.; Bertini, I.; Boudreault, S.; Cremonese, G.; Da Deppo, V.; Debei, S.; De Cecco, M.; Deller, J.; El Maarry, M. R.; Feller, C.; Fornasier, S.; Gicquel, A.; Groussin, O.; Gutierrez, P. J.; Hofmann, M.; Hviid, S. F.; Ip, W. H.; Jorda, L.; Knollenberg, J.; Kramm, J. R.; Kuhrt, E.; Kuppers, M.; La Forgia, F.; Lara, L. M.; Lin, Z. Y.; Lazzarin, M.; Lopez Moreno, J. J.; Lucchetti, A.; Marzari, F.; Massironi, M.; Michalik, H.; Oklay, N.; Pommerol, A.; Preusker, F.; Scholten, F.; Thomas, N.; Tubiana, C.; Vincent, J. B./titolo:The Agilkia boulders%2Fpebbles size-frequency distributions: OSIRIS and ROLIS joint observations of 67P surface/doi:10.1093%2Fmnras%2Fstw2720/rivista:Monthly notices of the Royal Astronomical Society (Print)/anno:2016/pagina_da:S242/pagina_a:S252/intervallo_pagine:S242–S252/volume:462 Pajola, M.; Mottola, S.; Hamm, M.; Fulle, M.; Davidsson, B.; Güttler, C.; Sierks, H.; Naletto, G.; Arnold, G.; Grothues, H.-G.; Jaumann, R.; Michaelis, H.; Bibring, J. P.; Barbieri, C.; Lamy, P. L.; Rodrigo, R.; Koschny, D.; Rickman, H.; Keller, H. U.; Agarwal, J.; ... (2016). The Agilkia boulders/pebbles size–frequency distributions: OSIRIS and ROLIS joint observations of 67P surface. Monthly notices of the Royal Astronomical Society, 462(Suppl 1), S242-S252. Oxford University Press 10.1093/mnras/stw2720 Monthly Notices of the Royal Astronomical Society, 2016, 462 (Suppl. 1), pp.S242-S252. ⟨10.1093/mnras/stw2720⟩ |
| ISSN: | 0035-8711 1365-2966 |
| DOI: | 10.1093/mnras/stw2720⟩ |
| Popis: | By using the images acquired by the OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System) and ROLIS (ROsetta Lander Imaging System) cameras, we derive the size¿ frequency distribution (SFD) of cometary pebbles and boulders covering the size range 0.05¿ 30.0 m on the Agilkia landing site. The global SFD measured on OSIRIS images, reflects the different properties of the multiple morphological units present on Agilkia, combined with selection effects related to lifting, transport and redeposition. Contrarily, the different ROLIS SFD derived on the smooth and rough units may be related to their different regolith thickness present on Agilkia. In the thicker, smoother layer, ROLIS mainly measures the SFD of the airfall population which almost completely obliterates the signature of underlying boulders up to a size of the order of 1 m. This is well matched by the power-law index derived analysing coma particles identified by the grain analyser Grain Impact Analyser and Dust Accumulator. This result confirms the important blanketing dynamism of Agilkia. The steeper SFD observed in rough terrains from 0.4 to 2 m could point out intrinsic differences between northern and southern dust size distributions, or it may suggest that the underlying boulders `peek through¿ the thinner airfall layer in the rough terrain, thereby producing the observed excess in the decimetre size range. Eventually, the OSIRIS SFD performed on the Philae landing unit may be due to water sublimation from a static population of boulders, affecting smaller boulders before the bigger ones, thus shallowing the original SFD. The support of the national funding agencies of Germany (DLR), France(CNES), Italy(ASI), Spain(MEC), Sweden(SNSB) and the ESA Technical Directorate is gratefully acknowledged. |
| Databáze: | OpenAIRE |
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