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Large scale dust jets in the coma of 67P/Churyumov-Gerasimenko as seen by the OSIRIS instrument on board Rosetta

Lara, L.M. and Lowry, S. and Vincent, J.B. and Gutiérrez, P.J. and Rozek, A. and La Forgia, F. and Oklay, N. and Sierks, H. and Barbieri, C. and Lamy, P.L. and Rodrigo, R. and Koschny, D. and Rickman, H. and Keller, H. U. and Agarwal, J. and Auger, A.-T. and A’Hearn, M. F. and Barucci, M. A. and Bertaux, J.–L. and Bertini, I. and Besse, S. and Bodewits, D. and Cremonese, G. and Davidsson, B. and Da Deppo, V. and Debei, S. and De Cecco, M. and El-Maarry, M.R. and Ferri, F. and Fornasier, S. and Fulle, M. and Groussin, O. and Gutiérrez–Marques, P. 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 Lazzarin, M. and Lin, Z.–Y. and López-Moreno, J. J. and Magrin, S. and Marzari, F. and Michalik, H. and Moissl–Fraund, R. and Moreno, F. and Mottola, S. and Naletto, G. and Pajola, M. and Pommerol, A. and Thomas, N. and Sabau, M.D. and Tubiana, C. (2015) Large scale dust jets in the coma of 67P/Churyumov-Gerasimenko as seen by the OSIRIS instrument on board Rosetta. Astronomy and Astrophysics, 583, A9. EDP Sciences. DOI: 10.1051/0004-6361/201526103 ISSN 0004-6361

Full text not available from this repository.

Abstract

Context. During the most recent perihelion passage in 2009 of comet 67P/Churyumov–Gerasimenko, ground–based observations showed an anisotropic dust coma where jet–like features were detected at ∼ 1.3 AU from the Sun. The current perihelion passage is exceptional as the Rosetta spacecraft is monitoring the nucleus activity since March 2014, when a clear dust coma was already surrounding the nucleus at 4.3 AU from the Sun. Subsequently, the OSIRIS camera also witnessed an outburst in activity between April 27 and 30, and since mid–July, the dust coma at r^_{h} ∼ 3.7 − 3.6 AU preperihelion is clearly non–isotropic, pointing to the existence of dust jet–like features. Aims. To ascertain on the nucleus surface the origin of the dust jet–like features detected as early as in mid–July 2014. This will help to establish how the localised comet nucleus activity compares with that seen in previous apparitions as well as its evolution as the comet approaches its perihelion when most of the jets were detected from ground–based observations. Also, the determination of these areas allows for framing them in regions with spectroscopic or geomorphological distinct characteristics. Methods. Three series of dust images of comet 67P/Churyumov-Gerasimenko obtained with the Wide Angle Camera (WAC) of the OSIRIS instrument on board the Rosetta spacecraft have been processed with different enhancement techniques. This has been made in order to clearly show the existence of jet–like features in the dust coma whose appearance towards the observer changed due to rotation of the comet nucleus and due to the changing observing geometry from the spacecraft. The position angles of these features in the coma together with information on the observing geometry, nucleus shape and rotation, have allowed us to determine the most likely locations on the nucleus surface where the jets originate from. Results. Geometrical tracing of jet sources indicates that the activity of the nucleus of 67P, during July and August 2014, gave rise to large scale jet–like features from the Hapi, Hathor, Anuket and Aten regions, confirming that active regions may be present on the nucleus localized at 60◦ northern latitude as deduced from previous comet apparitions. Also, there are hints that large–scale jets observed from ground are possibly composed, in their origin on the nucleus surface, by numerous small scale features.

Item URL in elib:https://elib.dlr.de/97413/
Document Type:Article
Title:Large scale dust jets in the coma of 67P/Churyumov-Gerasimenko as seen by the OSIRIS instrument on board Rosetta
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lara, L.M.Instituto de Astrofisica de Andalucia-CSIC, Glorieta de la Astrono- mia, 18008 Granada, Spain, e-mail: lara (at) iaa.csic.esUNSPECIFIED
Lowry, S.Centre for Astrophysics and Planetary Science, School of Physi- cal Sciences, The University of Kent, Canterbury CT2 7NH, United KingdomUNSPECIFIED
Vincent, J.B.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Gutiérrez, P.J.Instituto de Astrofisica de Andalucia-CSIC, Glorieta de la Astrono- mia, 18008 Granada, SpainUNSPECIFIED
Rozek, A.Centre for Astrophysics and Planetary Science, School of Physi- cal Sciences, The University of Kent, Canterbury CT2 7NH, United KingdomUNSPECIFIED
La Forgia, F.Department of Physics and Astronomy G. Galilei, University of Padova, Vic. Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Oklay, N.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Sierks, H.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Barbieri, C.Department of Physics and Astronomy G. Galilei, University of Padova, Vic. Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Lamy, P.L.Aix Marseille Université, CNRS, LAM (Laboratoire dAstro- physique de Marseille) UMR 7326, 13388, Marseille, FranceUNSPECIFIED
Rodrigo, R.Centro de Astrobiologia (INTA-CSIC), European Space Agency (ESA), European Space Astronomy Centre (ESAC), P.O. Box 78, E-28691 Villanueva de la Canada, Madrid, SpainUNSPECIFIED
Koschny, D.Research and Scientific Support Department, European Space Agency, 2201 Noordwijk, The NetherlandsUNSPECIFIED
Rickman, H.PAS Space Reserch Center, Bartycka 18A, 00716 Warszawa, PolandUNSPECIFIED
Keller, H. U.Institute for Geophysics and Extraterrestrial Physics, TU Braun- schweig, 38106 Braunschweig, GermanyUNSPECIFIED
Agarwal, J.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Auger, A.-T.Aix Marseille Université, CNRS, LAM (Laboratoire dAstro- physique de Marseille) UMR 7326, 13388, Marseille, FranceUNSPECIFIED
A’Hearn, M. F.Department for Astronomy, University of Maryland, College Park, MD 20742-2421, USAUNSPECIFIED
Barucci, M. A.LESIA, Observatoire de Paris, CNRS, UPMC Univ Paris 06, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, FranceUNSPECIFIED
Bertaux, J.–L.LATMOS, CNRS/UVSQ/IPSL, 11 Boulevard dAlembert, 78280 Guyancourt, FranceUNSPECIFIED
Bertini, I.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, 35131 Padova, ItalyUNSPECIFIED
Besse, S.Research and Scientific Support Department, European Space Agency, 2201 Noordwijk, The NetherlandsUNSPECIFIED
Bodewits, D.Department for Astronomy, University of Maryland, College Park, MD 20742-2421, USAUNSPECIFIED
Cremonese, G.INAF Osservatorio Astronomico di Padova, vic. dell’Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Davidsson, B.Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, SwedenUNSPECIFIED
Da Deppo, V.CNR-IFN UOS Padova LUXOR, via Trasea 7, 35131 Padova, ItalyUNSPECIFIED
Debei, S.Department of Industrial Engineering, University of Padova, Via Venezia 1, 35131 Padova, ItalyUNSPECIFIED
De Cecco, M.University of Trento, via Sommarive 9, 38123 Trento, ItalyUNSPECIFIED
El-Maarry, M.R.Physikalisches Institut, Sidlerstrasse 5, University of Bern, CH-3012 Bern, SwitzerlandUNSPECIFIED
Ferri, F.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, 35131 Padova, ItalyUNSPECIFIED
Fornasier, S.LESIA, Observatoire de Paris, CNRS, UPMC Univ Paris 06, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, FranceUNSPECIFIED
Fulle, M.INAF – Osservatorio Astronomico di Trieste, via Tiepolo 11, 34143 Trieste, ItalyUNSPECIFIED
Groussin, O.Aix Marseille Université, CNRS, LAM (Laboratoire dAstro- physique de Marseille) UMR 7326, 13388, Marseille, FranceUNSPECIFIED
Gutiérrez–Marques, P.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Güttler, C.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Hviid, S.stubbe.hviid (at) dlr.deUNSPECIFIED
Ip, W.-H.Institute for Space Science, National Central University, 32054 Chung-Li, TaiwanUNSPECIFIED
Jorda, L.Aix Marseille Université, CNRS, LAM (Laboratoire dAstro- physique de Marseille) UMR 7326, 13388, Marseille, FranceUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
Kovacs, G.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Kramm, J.-R.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, GermanyUNSPECIFIED
Kührt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Küppers, M.ESA/ESAC, PO Box 78, 28691 Villanueva de la Cañada, SpainUNSPECIFIED
Lazzarin, M.Department of Physics and Astronomy G. Galilei, University of Padova, Vic. Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Lin, Z.–Y.Institute for Space Science, National Central University, 32054 Chung-Li, TaiwanUNSPECIFIED
López-Moreno, J. J.Instituto de Astrofisica de Andalucia-CSIC, Glorieta de la Astrono- mia, 18008 Granada, SpainUNSPECIFIED
Magrin, S.Department of Physics and Astronomy G. Galilei, University of Padova, Vic. Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Marzari, F.Department of Physics and Astronomy G. Galilei, University of Padova, Vic. Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Michalik, H.Institute for Geophysics and Extraterrestrial Physics, TU Braun- schweig, 38106 Braunschweig, GermanyUNSPECIFIED
Moissl–Fraund, R.ESA/ESAC, PO Box 78, 28691 Villanueva de la Cañada, SpainUNSPECIFIED
Moreno, F.Instituto de Astrofisica de Andalucia-CSIC, Glorieta de la Astrono- mia, 18008 Granada, SpainUNSPECIFIED
Mottola, S.stefano.mottola (at) dlr.deUNSPECIFIED
Naletto, G.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, 35131 Padova, ItalyUNSPECIFIED
Pajola, M.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, 35131 Padova, ItalyUNSPECIFIED
Pommerol, A.Physikalisches Institut, Sidlerstrasse 5, University of Bern, CH-3012 Bern, SwitzerlandUNSPECIFIED
Thomas, N.Physikalisches Institut, Sidlerstrasse 5, University of Bern, CH-3012 Bern, SwitzerlandUNSPECIFIED
Sabau, M.D.Instituto Nacional de Técnica Aeroespacial, 28850 Torrejón de Ar- doz, Madrid, SpainUNSPECIFIED
Tubiana, C.Max-Planck Institut fuer Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Goettingen, 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 :10.1051/0004-6361/201526103
Page Range:A9
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:Rosetta, comets, activity
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 13:35
Last Modified:08 Mar 2018 18:54

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