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A three-dimensional modelling of the layered structure of comet 67P/Churyumov-Gerasimenko

Penasa, L. and Massironi, Matteo and Naletto, G. and Simioni, Emanuele and Ferrari, Sabrina and Pajola, M. and Lucchetti, A. and Preusker, Frank and Scholten, Frank and Jorda, L and Gaskell, R.W. and Ferri, F. and Marzari, F. and Davidsson, B. and Mottola, Stefano and Sierks, H. and Barbieri, C. and Lamy, P. and Rodrigo, Rafael and Koschny, Detlef and Rickman, Hans and Keller, H. U. and Agarwal, J. and A'Hearn, M. F. and Barucci, M. A. and Bertaux, J.-L. and Bertini, I. and Cremonese, G. and Da Deppo, V. and Debei, S. and De Cecco, M. and Deller, J. and Feller, Clement and Fornasier, S. and Frattin, E. and Fulle, M. and Groussin, Olivier and Gutierrez, P.J. and Güttler, C. and Hofmann, M. and Hviid, Stubbe and Ip, W-H. and Knollenberg, Jörg and Kramm, J. R. and Kührt, Ekkehard and Küppers, M. and La Forgia, Fiorangela and Lara, L. M. and Lazzarin, M. and Lee, J.-C. and Lopez Moreno, J. J. and Oklay, Nilda and Shi, X. and Thomas, N. and Tubiana, C. and Vincent, Jean-Baptiste (2017) A three-dimensional modelling of the layered structure of comet 67P/Churyumov-Gerasimenko. Monthly Notices of the Royal Astronomical Society, 469, pp. 741-754. Oxford University Press. DOI: 10.1093/mnras/stx2899 ISSN 0035-8711

Full text not available from this repository.

Official URL: https://academic.oup.com/mnras/article/469/Suppl_2/S741/4622963

Abstract

We provide a three-dimensional model of the inner layered structure of comet 67P based on the hypothesis of an extended layering independently wrapping each lobe. A large set of terrace orientations was collected on the latest shape model and then used as a proxy for the local orientation of the surfaces of discontinuity which defines the layers. We modelled the terraces as a family of concentric ellipsoidal shells with fixed axis ratios, producing a model that is completely defined by just eight free parameters. Each lobe of 67P has been modelled independently, and the two sets of parameters have been estimated by means of non-linear optimization of the measured terrace orientations. The proposed model is able to predict the orientation of terraces, the elongation of cliffs, the linear traces observed in the Wosret and Hathor regions and the peculiar alignment of boulder-like features which has been observed in the Hapi region, which appears to be related to the inner layering of the big lobe. Our analysis allowed us to identify a plane of junction between the two lobes, further confirming the independent nature of the lobes. Our layering models differ from the best-fitting topographic ellipsoids of the surface, demonstrating that the terraces are aligned to an internal structure of discontinuities, which is unevenly exposed on the surface, suggesting a complex history of localized material removal from the nucleus.

Item URL in elib:https://elib.dlr.de/125111/
Document Type:Article
Title:A three-dimensional modelling of the layered structure of comet 67P/Churyumov-Gerasimenko
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Penasa, L.center of studies and activities for Space CISAC, PadovaUNSPECIFIED
Massironi, MatteoINAF, Padova, IUNSPECIFIED
Naletto, G.Università di Padova, Departimento di Elettronica et Informatica, Padova, ItalyUNSPECIFIED
Simioni, EmanueleCNR-IFN UOS Padova LUXOR, Via Trasea, 7, 35131 Padova , ItalyUNSPECIFIED
Ferrari, SabrinaDipartimento di Geoscienze, Università degli studi di Padova, ItalyUNSPECIFIED
Pajola, M.NASA Ames Research Center, Moffett Field, USAUNSPECIFIED
Lucchetti, A.center of studies and activities for space, cisas, g. colombo, university of padova, via venezia 15, 35131, padova, italyUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Scholten, Frankfrank.scholten (at) dlr.deUNSPECIFIED
Jorda, LLAM, MarseilleUNSPECIFIED
Gaskell, R.W.Planetary Science Institute, Tucson, AZ, USAUNSPECIFIED
Ferri, F.University of Padova, Padova, ItalyUNSPECIFIED
Marzari, F.Università di Padova, Departimento di Fisica, Padova, ItalyUNSPECIFIED
Davidsson, B.jpl, PasadenaUNSPECIFIED
Mottola, StefanoStefano.Mottola (at) dlr.deUNSPECIFIED
Sierks, H.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, GermanyUNSPECIFIED
Barbieri, C.University of Padova, Padova, ItalyUNSPECIFIED
Lamy, P.Laboratoire d'Astronomie Spatiale, Marseille, FranceUNSPECIFIED
Rodrigo, RafaelInstituto de Astrofisica de AndaluciaUNSPECIFIED
Koschny, DetlefESTEC, The NetherlandsUNSPECIFIED
Rickman, HansUppsala Astronomical ObservatoryUNSPECIFIED
Keller, H. U.horst.keller (at) dlr.deUNSPECIFIED
Agarwal, J.Max-Planck-Institut für SonnensystemforschungUNSPECIFIED
A'Hearn, M. F.University of Maryland, Department of Astronomy, Maryland, USAUNSPECIFIED
Barucci, M. A.Observatoire de Paris, Meudon, FranceUNSPECIFIED
Bertaux, J.-L.Laboratoire Atmosphères, Milieux, Observations Spatiales, CNRS/UVSQ/UPMC, 11 boulevard d’Alembert, 78280 Guyancourt, FranceUNSPECIFIED
Bertini, I.Dipartimento di Astronomia, Università di Padova, Padova, ItalyUNSPECIFIED
Cremonese, G.Osservatorio Astronomico, Padova, ItalyUNSPECIFIED
Da Deppo, V.Consiglio Nazionale delle Ricerche-Istituto Nazionale per la Fisica della Materia, Luxor, Padova, ItalyUNSPECIFIED
Debei, S.Università di Padova, Center of Studies and Activities of Space (CISAS) "G.Colombo", Padova, ItalyUNSPECIFIED
De Cecco, M.Università di Padova, Center of Studies and Activities of Space (CISAS) "G.Colombo", Padova, ItalyUNSPECIFIED
Deller, J.Max-Planck Institut für Sonnensystemforschung, Goettingen, GermanyUNSPECIFIED
Feller, ClementLESIA, Observatoire de Paris, CNRS, UPMC Univ Paris 06, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, FranceUNSPECIFIED
Fornasier, S.Observatoire de Paris-Meudon, FranceUNSPECIFIED
Frattin, E.INAF Osservatorio Astronomico di Padova, Padova, ItalyUNSPECIFIED
Fulle, M.INAF - Osservatorio Astronomico di Trieste, Trieste, ItalyUNSPECIFIED
Groussin, OlivierLab. d'Astrophysique de Marseille, FranceUNSPECIFIED
Gutierrez, P.J.IAA-CSIC, Granada, SpainUNSPECIFIED
Güttler, C.Max-Planck-Institut für SonnensystemforschungUNSPECIFIED
Hofmann, M.Max-Planck-Institut für Sonnensystemforschung, Göttingen, GermanyUNSPECIFIED
Hviid, StubbeStubbe.Hviid (at) dlr.deUNSPECIFIED
Ip, W-H.Institute for Space Science, National Central University, Chung Li, TaiwanUNSPECIFIED
Knollenberg, JörgJoerg.Knollenberg (at) dlr.deUNSPECIFIED
Kramm, J. R.Max Planck Institute for Solar Systems Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Kührt, EkkehardEkkehard.Kuehrt (at) dlr.deUNSPECIFIED
Küppers, M.ESA/ESAC, PO Box 78, 28691 Villanueva de la Cañada, SpainUNSPECIFIED
La Forgia, FiorangelaUniversity of Padova, Department of Physics and Astronomy, Vicolo dell'Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Lara, L. M.Instituto de Astrofisica de Andalucia, CSIC, Granada, SpainUNSPECIFIED
Lazzarin, M.Department of Astronomy, University of PaduaUNSPECIFIED
Lee, J.-C.Dept. of Earth Science, National Central University, 32054 Chung-Li, TaiwanUNSPECIFIED
Lopez Moreno, J. J.Instituto de Astrofísica de Andalucía, Granada, SpainUNSPECIFIED
Oklay, NildaNilda.OklayVincent (at) dlr.dehttps://orcid.org/0000-0002-4909-9692
Shi, X.Max-Planck-Institut für Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Göttingen, GermanyUNSPECIFIED
Thomas, N.University of Bern, SwitzerlandUNSPECIFIED
Tubiana, C.Max-Planck-Institut fuer Sonnensystemforschung, GermanyUNSPECIFIED
Vincent, Jean-BaptisteJean-Baptiste.Vincent (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:469
DOI :10.1093/mnras/stx2899
Page Range:pp. 741-754
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:methods: data analysis, comets: general, comets: individual: 67P/Churyumov–Gerasimenko
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ROSETTA Instrumente
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geodesy
Institute of Planetary Research > Asteroids and Comets
Deposited By: Scholten, Dipl.-Ing. Frank
Deposited On:17 Dec 2018 08:55
Last Modified:06 Sep 2019 15:17

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