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Geomorphology of the Imhotep region on comet 67P/Churyumov-Gerasimenko from OSIRIS observations

Auger, A.-T. and Groussin, Olivier and Jorda, L. and Bouley, S. and Gaskell, R.W. and Lamy, P. and Capanna, C. and Thomas, N. and Sierks, H. and Barbieri, C. and Rodrigo, Rafael and Koschny, Detlef and Rickman, Hans and Keller, H. U. and A’Hearn, M. F. and Barucci, M. A. and Bertaux, J.-L. and Bertini, I. and Cremonese, G. and Da Deppo, V. and Davidsson, B. and Debei, S. and De Cecco, M. and El-Maarry, M. R. and Fornasier, S. and Fulle, M. and Gutierrez, P.J. and Hviid, S. and Ip, W-H. and Knollenberg, J. and Kramm, J. R. and Kührt, E. and Küppers, Michael and Lazzarin, M. and Lara López, Luisa M. and Lopez Moreno, J. and Marzari, F. and Massironi, M. and Michalik, H. and Naletto, G. and Pajola, M. and Pommerol, Antoine and Sabau, L. and Vincent, J.-B. and Wenzel, K.-P. (2015) Geomorphology of the Imhotep region on comet 67P/Churyumov-Gerasimenko from OSIRIS observations. Astronomy & Astrophysics, 583, A35. EDP Sciences. DOI: 10.1051/0004-6361/201525947 ISSN 0004-6361

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Abstract

Context. Since August 2014, the OSIRIS Narrow Angle Camera (NAC) onboard the Rosetta spacecraft has acquired high spatial resolution images of the nucleus of comet 67P/Churyumov-Gerasimenko, up to the decimeter scale. This paper focuses on the Imhotep region, located on the nucleus largest lobe, near the equator. Aims. We performed the mapping, inventory and description of the geomorphology of the Imhotep region. We propose and discuss some processes to explain the formation and on-going evolution of this region. Methods. We use OSIRIS NAC images, gravitational heights and slopes and Digital Terrain Models (DTM) to map and measure the morphologies of Imhotep. Results. The Imhotep region presents a wide variety of terrains and morphologies: smooth and rocky terrains, bright areas, linear features, roundish features and boulders. Gravity processes play a significant role on the geomorphological evolution of this region by mass wasting and collapse. Cometary processes initiate erosion and are responsible for the formation of degassing conduits revealed by elevated roundish features on the surface. A scenario for the formation and evolution of the Imhotep region is also proposed, which implies the presence of large primordial voids into the nucleus, resulting from its formation process.

Item URL in elib:https://elib.dlr.de/96862/
Document Type:Article
Title:Geomorphology of the Imhotep region on comet 67P/Churyumov-Gerasimenko from OSIRIS observations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Auger, A.-T.Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388, Marseille, France, email: anne_therese.auger (at) lam.frUNSPECIFIED
Groussin, OlivierLab. d'Astrophysique de Marseille, FranceUNSPECIFIED
Jorda, L.Laboratoire d'Astrophysique de Marseille, FranceUNSPECIFIED
Bouley, S.Aix-Marseille Université, CNRS, LAM (LaboratoireUNSPECIFIED
Gaskell, R.W.Planetary Science Institute, Tucson, AZ, USAUNSPECIFIED
Lamy, P.Laboratoire d'Astronomie Spatiale, Marseille, FranceUNSPECIFIED
Capanna, C.Laboratoire d'Astrophysique de Marseille, FranceUNSPECIFIED
Thomas, N.Max-Planck-Institut für Aeronomie, Katlenburg-LindauUNSPECIFIED
Sierks, H.Max-Planck-Institut für Sonnensystemforschung, Göttingen, GermanyUNSPECIFIED
Barbieri, C.University of Padova, Padova, ItalyUNSPECIFIED
Rodrigo, RafaelInstituto de Astrofisica de AndaluciaUNSPECIFIED
Koschny, DetlefESTEC, The NetherlandsUNSPECIFIED
Rickman, HansUppsala Astronomical ObservatoryUNSPECIFIED
Keller, H. U.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-LindauUNSPECIFIED
A’Hearn, M. F.Department for Astronomy, University of MarylandUNSPECIFIED
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
Davidsson, B.Astronomiska observatoriet, Uppsala, SwedenUNSPECIFIED
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
El-Maarry, M. R.Physikalisches Institut, Sidlerstrasse 5, University of Bern, CH-3012 Bern, SwitzerlandUNSPECIFIED
Fornasier, S.Observatoire de Paris-Meudon, FranceUNSPECIFIED
Fulle, M.INAF - Osservatorio Astronomico di Trieste, Trieste, ItalyUNSPECIFIED
Gutierrez, P.J.IAA-CSIC, Granada, SpainUNSPECIFIED
Hviid, S.stubbe.hviid (at) dlr.deUNSPECIFIED
Ip, W-H.Institute for Space Science, National Central University, Chung Li, TaiwanUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
Kramm, J. R.Max Planck Institute for Solar Systems Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Kührt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Küppers, MichaelMax-Planck-Institut für SonnensystemforschungUNSPECIFIED
Lazzarin, M.Department of Astronomy, University of PaduaUNSPECIFIED
Lara López, Luisa M.IAA-CSIC Granada, SpainUNSPECIFIED
Lopez Moreno, J.Instituto de Astrofifica de Andalucia-Consejo Superior de Investigaciones Cientificas, Granada, SpainUNSPECIFIED
Marzari, F.Università di Padova, Departimento di Fisica, Padova, ItalyUNSPECIFIED
Massironi, M.University of Padova, ItalyUNSPECIFIED
Michalik, H.Institut für Datentechnik und Kommunikationsnetze (IDA), Technische Universität Braunschweig, Hans-Sommer-Str. 66, 38106 Braunschweig, GermanyUNSPECIFIED
Naletto, G.Università di Padova, Departimento di Elettronica et Informatica, Padova, ItalyUNSPECIFIED
Pajola, M.CISAS - Center for Studies and Activities for Space, University of PadovaUNSPECIFIED
Pommerol, AntoinePhysikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, SwitzerlandUNSPECIFIED
Sabau, L.Instituto Nacional de Técnica Aérospacial, Torrejon de Ardoz, SpainUNSPECIFIED
Vincent, J.-B.Max-Planck-Institut für Sonnensystemforschung, Göttingen, GermanyUNSPECIFIED
Wenzel, K.-P.European Space and Technology Centre, Noordwijk, NetherlandsUNSPECIFIED
Date:2015
Journal or Publication Title:Astronomy & Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:583
DOI :10.1051/0004-6361/201525947
Page Range:A35
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:Comets: individual: 67P/Churyumov-Gerasimenko - Methods: data analysis
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 > Asteroids and Comets
Deposited By: Bründl, Tara-Marie
Deposited On:08 Dec 2015 13:10
Last Modified:08 Mar 2018 18:22

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