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, R. and Koschny, D. and Rickman, H. and Keller, H.U. and A'Hearn, M.F. and Auger, A.-T. 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 Gutiérrez, 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, M. and Lara, L.M. and Lazzarin, M. and Lopez Moreno, J.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, A. 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) 1-4. ISSN 0004-6361. E-ISSN 1432-0746. (doi:https://doi.org/10.1051/0004-6361/201527020) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1051/0004-6361/201527020

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 used 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 that are growing in size from a given location in a preferential direction at a rate of 5.6-8.1 x 10-5 m s-1 during the observational period. The location where the changes started and the contours of the expanding features are bluer than the surroundings, which suggests that ices (H2O and/or CO2) are exposed on the surface. However, sublimation of ices alone is not sufficient to explain the observed expanding features. No significant variations in the dust activity pattern are observed during the period of changes. © ESO, 2015.

Item Type: Article
Additional information: Unmapped bibliographic data: C7 - A36 [EPrints field already has value set] LA - English [Field not mapped to EPrints] J2 - Astron. Astrophys. [Field not mapped to EPrints] AD - Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille), UMR 7326, Marseille, France [Field not mapped to EPrints] AD - Max-Planck-Institut für Sonnensystemforschung, Göttingen, Germany [Field not mapped to EPrints] AD - Department of Physics and Astronomy, Padova University, Vicolo dell'Osservatorio 3, Padova, Italy [Field not mapped to EPrints] AD - Centro de Astrobiologia (INTA-CSIC), Villanueva de la Canada, Madrid, Spain [Field not mapped to EPrints] AD - International Space Science Institute, Hallerstrasse 6, Bern, Switzerland [Field not mapped to EPrints] AD - Scientific Support Office, European Space Agency, Noordwijk, Netherlands [Field not mapped to EPrints] AD - Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala, Sweden [Field not mapped to EPrints] AD - PAS Space Research Center, Bartycka 18A, Warszawa, Poland [Field not mapped to EPrints] AD - Institute of Planetary Research, DLR, Rutherfordstrasse 2, Berlin, Germany [Field not mapped to EPrints] AD - Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, Germany [Field not mapped to EPrints] AD - Department of Astronomy, University of Maryland, College Park, MD, United States [Field not mapped to EPrints] AD - Laboratoire GEOPS (Géosciences Paris Sud), Bat. 509, Université Paris Sud, Orsay Cedex, France [Field not mapped to EPrints] AD - LESIA, Obs. de Paris, CNRS, Univ Paris 06, Univ. Paris-Diderot, 5 place J. Janssen, Meudon, France [Field not mapped to EPrints] AD - LATMOS, CNRS/UVSQ/IPSL, 11 boulevard d'Alembert, Guyancourt, France [Field not mapped to EPrints] AD - Centro di Ateneo di Studi Ed Attività Spaziali Giuseppe Colombo (CISAS), University of Padova, via Venezia 15, Padova, Italy [Field not mapped to EPrints] AD - Department of Industrial Engineering, University of Padova, Padova, Italy [Field not mapped to EPrints] AD - CNR-IFN UOS Padova LUXOR, via Trasea 7, Padova, Italy [Field not mapped to EPrints] AD - UNITN, Universit di Trento, via Mesiano, 77, Trento, Italy [Field not mapped to EPrints] AD - Physikalisches Institut, University of Bern, Sidlerstr. 5, Bern, Switzerland [Field not mapped to EPrints] AD - INAF-Osservatorio Astronomico, via Tiepolo 11, Trieste, Italy [Field not mapped to EPrints] AD - Instituto de Astrofisica de Andalucía (CSIC), Glorieta de la Astronomía s/n, Granada, Spain [Field not mapped to EPrints] AD - Institute for Space Science, Nat. Central Univ., 300 Chung Da Rd., Chung-Li, Taiwan [Field not mapped to EPrints] AD - Operations Department, European Space Astronomy Centre/ESA, PO Box 78, Villanueva de la Canada, Madrid, Spain [Field not mapped to EPrints] AD - Centre for Astrophysics and Planetary Science, Schoold of Physical Sciences (SEPnet), Univsersity of Kent, Canterbury, United Kingdom [Field not mapped to EPrints] AD - Southwest Research Institute, 1050 Walnut St., Boulder, CO, United States [Field not mapped to EPrints] AD - INAF, Osservatorio Astronomico di Padova, Padova, Italy [Field not mapped to EPrints] AD - University of Padova, Department of Information Engineering, via Gradenigo 6/B, Padova, Italy [Field not mapped to EPrints] AD - Konkoly Observatory, PO Box 67, Budapest, Hungary [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Comets: general, Comets: individual: 67P/Churyumov-Gerasimenko, Methods: data analysis, Carbon dioxide, 67p/churyumov-gerasimenko, Activity patterns, Comets: general, Comets: individual: 67P/Churyumov-Gerasimenko, Methods:data analysis, Morphological changes, OSiRIS cameras, Temporal change, Morphology
Subjects: Q Science > QB Astronomy
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Stephen Lowry
Date Deposited: 08 Dec 2015 22:14 UTC
Last Modified: 21 Dec 2015 15:39 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/52263 (The current URI for this page, for reference purposes)
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