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Temporal morphological changes in the Imhotep region of comet 67P/Churyumov-Gerasimenko

Groussin, O. and Sierks, H. and Barbieri, C. and Lamy, P. and Rodrigo, Rafael and Koschny, Detlef and Rickman, Hans and Keller, H. U. and A’Hearn, M. F. and Auger, Anne-Therese and Barucci, M. A. and Bertaux, J.-L. and Bertini, I. and Besse, S. 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 Güttler, C. and Hviid, S. and Ip, W-H. and Jorda, L. and Knollenberg, J. and Kovacs, G. and Kramm, J. R. and Kührt, E. and Küppers, Michael and Lara López, Luisa M. and Lazzarin, M. and Lopez Moreno, J. and Lowry, S. and Marchi, S. and Marzari, F. and Massironi, M. and Mottola, S. and Naletto, G. and Oklay, N. and Pajola, M. and Pommerol, Antoine and Thomas, N. and Toth, I. and Tubiana, C. and Vincent, J.B. (2015) Temporal morphological changes in the Imhotep region of comet 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics, 583, A36. EDP Sciences. DOI: 10.1051/0004-6361/201527020 ISSN 0004-6361

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Abstract

Aims. We report on the first major temporal morphological changes observed on the surface of the nucleus of comet 67P/Churyumov- Gerasimenko, in the smooth terrains of the Imhotep region. Methods. We use images of the OSIRIS cameras onboard Rosetta to follow the temporal changes from 24 May 2015 to 11 July 2015. Results. The morphological changes observed on the surface are visible in the form of roundish features, which are growing in size from a given location in a preferential direction, at a rate of 20 –29 cm h^{−1} during the observational period. The location where changes started and the contours of the expanding features are bluer than the surroundings, suggesting the presence of ices (H^_{2}O and/or CO^_{2}) exposed on the surface. No increase in dust activity is observed during the period of changes. The observed changes are best interpreted by the rapid progression of a sublimation front.

Item URL in elib:https://elib.dlr.de/97555/
Document Type:Article
Title:Temporal morphological changes in the Imhotep region of comet 67P/Churyumov-Gerasimenko
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Groussin, O.Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388, Marseille, France, e-mail: olivier.groussin (at) lam.frUNSPECIFIED
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.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-LindauUNSPECIFIED
A’Hearn, M. F.Department for Astronomy, University of MarylandUNSPECIFIED
Auger, Anne-ThereseAix Marseille Université, CNRS, Laboratoire d’Astrophysique de Marseille, UMR 7326, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France.UNSPECIFIED
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
Besse, S.Instituto de Astrofifica de Andalucia-Consejo Superior de Investigaciones Cientificas, Granada, SpainUNSPECIFIED
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
Güttler, C.Max-Planck-Institut für SonnensystemforschungUNSPECIFIED
Hviid, S.stubbe.hviid (at) dlr.deUNSPECIFIED
Ip, W-H.Institute for Space Science, National Central University, Chung Li, TaiwanUNSPECIFIED
Jorda, L.Laboratoire d'Astrophysique de Marseille, FranceUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
Kovacs, G.Max–Planck–Institut für Sonnensystemforschung, Justus–von–UNSPECIFIED
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
Lara López, Luisa M.IAA-CSIC Granada, SpainUNSPECIFIED
Lazzarin, M.Department of Astronomy, University of PaduaUNSPECIFIED
Lopez Moreno, J.Instituto de Astrofifica de Andalucia-Consejo Superior de Investigaciones Cientificas, Granada, SpainUNSPECIFIED
Lowry, S.University of Kent, Canterbury, UKUNSPECIFIED
Marchi, S.Department of Astronomy, University of PaduaUNSPECIFIED
Marzari, F.Università di Padova, Departimento di Fisica, Padova, ItalyUNSPECIFIED
Massironi, M.University of Padova, ItalyUNSPECIFIED
Mottola, S.stefano.mottola (at) dlr.deUNSPECIFIED
Naletto, G.Università di Padova, Departimento di Elettronica et Informatica, Padova, ItalyUNSPECIFIED
Oklay, N.Max-Planck-Institut für SonnensystemforschungUNSPECIFIED
Pajola, M.CISAS - Center for Studies and Activities for Space, University of PadovaUNSPECIFIED
Pommerol, AntoinePhysikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, SwitzerlandUNSPECIFIED
Thomas, N.Max-Planck-Institut für Aeronomie, Katlenburg-LindauUNSPECIFIED
Toth, I.Konkoly Observatory, MTA CSFK CSIUNSPECIFIED
Tubiana, C.Max-Planck-Institut fuer Sonnensystemforschung, GermanyUNSPECIFIED
Vincent, J.B.Max-Planck-Institut fuer Sonnensystemforschung, GermanyUNSPECIFIED
Date:2015
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:583
DOI :10.1051/0004-6361/201527020
Page Range:A36
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:Comets: individual: 67P/Churyumov-Gerasimenko – Comets: general – 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 13:48
Last Modified:08 Mar 2018 18:54

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