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Search for satellites near comet 67P/Churyumov-Gerasimenko using Rosetta/OSIRIS images

Bertini, I. and Gutierrez, P.J. and Lara, L. M. and Moreno, F. and Pajola, M. and La Forgia, Fiorangela 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 Cremonese, G. and Da Deppo, V. and Davidsson, B. and Debei, S. and De Cecco, M. and Ferri, F. and Fornasier, S. and Fulle, M. and Giacomini, Lorenza and Groussin, Olivier and Güttler, C. and Hviid, S. and Ip, W-H. and Jorda, L. and Knollenberg, J. and Koschny, Detlef and Kramm, J. R. and Kührt, E. and Küppers, Michael and Lazzarin, M. and Magrin, S. and Massironi, M. and Michalik, H. and Lopez Moreno, J. and Mottola, S. and Naletto, G. and Oklay, N. and Thomas, N. and Tubiana, C. and Vincent, J.B. and Marzari, F. (2015) Search for satellites near comet 67P/Churyumov-Gerasimenko using Rosetta/OSIRIS images. Astronomy & Astrophysics, 583, A19. EDP Sciences. DOI: 10.1051/0004-6361/201525979 ISSN 0004-6361

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Abstract

Context. The European Space Agency Rosetta mission reached and started escorting its main target, the Jupiter family comet 67P/Churyumov-Gerasimenko, at the beginning of August 2014. Within the Solar System small bodies context, satellite searches from approaching spacecrafts were extensively used in the past to study the nature of the visited bodies and their collisional enviroenment. Aims. During the approaching phase to the comet in July 2014, the OSIRIS instrument on board Rosetta performed a campaign aimed at the detection of objects in the vicinity of the comet’s nucleus and at the measure of their possible bound orbits. Beside the scientific purpose, the search had the additional aim of spacecraft security to avoid hazardous material in the comet’s enviroenment. Methods. Images in the red spectral domain were acquired with the OSIRIS Narrow Angle Camera following an observational strategy tailored to maximize the scientific outcome. From the acquired images, sources are extracted and displayed to search for plausible displacements of all sources from image to image. After stars identification, the remaining sources are thoroughly analysed. In order to put some constraints to the expected displacements of a potential satellite, Montecarlo simulations on the apparent motion of potential satellites within the Hill sphere have been performed. Results. We found no unambiguous detections of objects larger than ~ 6 m within ~ 20 km and larger than ~ 1 m between ~ 20 km and ~ 110 km from the nucleus. Our conclusions are consistent with independent works on dust grains in the comet’s coma and on boulders counting on the nucleus surface. Moreover, our analysis shows the comet’s outburst detected at the end of April 2014 was not strong enough to eject large objects and to place them into a stable orbit around the nucleus. Our findings underline the unlikeliness of the long–term survival of large objects around cometary nuclei.

Item URL in elib:https://elib.dlr.de/96870/
Document Type:Article
Title:Search for satellites near comet 67P/Churyumov-Gerasimenko using Rosetta/OSIRIS images
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bertini, I.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, I-35131 Padova, ivano.bertini (at) unipd.itUNSPECIFIED
Gutierrez, P.J.IAA-CSIC, Granada, SpainUNSPECIFIED
Lara, L. M.Instituto de Astrofisica de Andalucia, CSIC, Granada, SpainUNSPECIFIED
Moreno, F.Instituto de Astrofísica de Andalucía, Consejo Superior de Investigaciones Científicas (CSIC), P.O. Box 3008, 18080 Granada, SpainUNSPECIFIED
Pajola, M.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, I-35131 PadovaUNSPECIFIED
La Forgia, FiorangelaUniversity of Padova, Department of Physics and Astronomy, Vicolo dell'Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Sierks, H.Max-Planck-Institut für Sonnensystemforschung, Göttingen, 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
Agarwal, J.Max-Planck-Institut für SonnensystemforschungUNSPECIFIED
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
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
Ferri, F.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, I-35131 PadovaUNSPECIFIED
Fornasier, S.Observatoire de Paris-Meudon, FranceUNSPECIFIED
Fulle, M.INAF - Osservatorio Astronomico di Trieste, Trieste, ItalyUNSPECIFIED
Giacomini, LorenzaDipartimento di Geoscienze, University of Padova, via G. Gradenigo 6, 35131 Padova, ItalyUNSPECIFIED
Groussin, OlivierLab. d'Astrophysique de Marseille, FranceUNSPECIFIED
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
Koschny, DetlefESTEC, The NetherlandsUNSPECIFIED
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
Magrin, S.Department of Astronomy, University of PaduaUNSPECIFIED
Massironi, M.University of Padova, ItalyUNSPECIFIED
Michalik, H.Institut für Datentechnik und Kommunikationsnetze (IDA), Technische Universität Braunschweig, Hans-Sommer-Str. 66, 38106 Braunschweig, GermanyUNSPECIFIED
Lopez Moreno, J.Instituto de Astrofifica de Andalucia-Consejo Superior de Investigaciones Cientificas, Granada, SpainUNSPECIFIED
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
Thomas, N.Max-Planck-Institut für Aeronomie, Katlenburg-LindauUNSPECIFIED
Tubiana, C.Max-Planck-Institut fuer Sonnensystemforschung, GermanyUNSPECIFIED
Vincent, J.B.Max-Planck-Institut fuer Sonnensystemforschung, GermanyUNSPECIFIED
Marzari, F.Università di Padova, Departimento di Fisica, Padova, ItalyUNSPECIFIED
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 :10.1051/0004-6361/201525979
Page Range:A19
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:Small bodies - Comets - satellites - Rosetta OSIRIS
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 13:07
Last Modified:23 Aug 2016 09:50

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