Observations of Comet 9P/Tempel 1 around the Deep Impact event by the OSIRIS cameras onboard Rosetta

Keller, Horst Uwe, Küppers, Michael, Fornasier, Sonia, Gutiérrez, Pedro J., Hviid, Stubbe F., Jorda, Laurent, Knollenberg, Jörg, Lowry, Stephen C., Rengel, Miriam, Bertini, Ivano, and others. (2007) Observations of Comet 9P/Tempel 1 around the Deep Impact event by the OSIRIS cameras onboard Rosetta. Icarus, 187 (1). pp. 87-103. ISSN 0019-1035. (doi:10.1016/j.icarus.2006.09.023) (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/10.1016/j.icarus.2006.09.023

Abstract

The OSIRIS cameras on the Rosetta spacecraft observed Comet 9P/Tempel 1 from 5 days before to 10 days after it was hit by the Deep Impact projectile. The Narrow Angle Camera (NAC) monitored the cometary dust in 5 different filters. The Wide Angle Camera (WAC) observed through filters sensitive to emissions from OH, CN, Na, and OI together with the associated continuum. Before and after the impact the comet showed regular variations in intensity. The period of the brightness changes is consistent with the rotation period of Tempel 1. The overall brightness of Tempel 1 decreased by about 10% during the OSIRIS observations. The analysis of the impact ejecta shows that no new permanent coma structures were created by the impact. Most of the material moved with ~200 m s-1. Much of it left the comet in the form of icy grains which sublimated and fragmented within the first hour after the impact. The light curve of the comet after the impact and the amount of material leaving the comet (4.5 - 9 x 10^6 kg of water ice and a presumably larger amount of dust) suggest that the impact ejecta were quickly accelerated by collisions with gas molecules. Therefore, the motion of the bulk of the ejecta cannot be described by ballistic trajectories, and the validity of determinations of the density and tensile strength of the nucleus of Tempel 1 with models using ballistic ejection of particles is uncertain. © 2006 Elsevier Inc. All rights reserved.

Item Type: Article
DOI/Identification number: 10.1016/j.icarus.2006.09.023
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Icarus [Field not mapped to EPrints] AD - Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany [Field not mapped to EPrints] AD - Dipartimento di Astronomia, CISAS, Università di Padova, Vicolo dell'Osservatorio 5, 35100 Padova, Italy [Field not mapped to EPrints] AD - Instituto de Astrofísica de Andalucía - CSIC, C/Camino Bajo de Huétor, 50, 18008 Granada, Spain [Field not mapped to EPrints] AD - Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, Les Trois Lucs, 13376 Marseille, France [Field not mapped to EPrints] AD - DLR Institut für Planetenerkundung, Rutherfordstr. 2, 12489 Berlin, Germany [Field not mapped to EPrints] AD - Queen's University, Astrophysics Research Centre, Department of Physics and Astronomy, Belfast, BT7 1NN, United Kingdom [Field not mapped to EPrints] AD - INAF - Astronomical Observatory of Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy [Field not mapped to EPrints] AD - Institute of Space Science, National Central University, 32054 Chung Li, Taiwan [Field not mapped to EPrints] AD - Research and Scientific Support Department, the European Space Agency, ESTEC, Keplerlaan 1, Postbus 299, 2200 AG Noordwijk, Netherlands [Field not mapped to EPrints] AD - Physikalisches Institut, Abteilung Weltraumforschung und Planetologie, Universität Bern, Sidlerstr. 5, 3012 Bern, Switzerland [Field not mapped to EPrints] AD - Department of Astronomy and Space Physics, Box 51575120, Uppsala, Sweden [Field not mapped to EPrints] AD - Department of Astronomy, University of Maryland, MD 20742-2421, United States [Field not mapped to EPrints] AD - Dipartimento di Ingegneria Meccanica, via Venezia 1, 35131 Padova, Italy [Field not mapped to EPrints] AD - Observatoire de Paris, Section de Meudon, 92195 Meudon, France [Field not mapped to EPrints] AD - Service d'Aéronomie, CNRS, Route des Gatines, BP 3, 91371 Verrières-le-Buisson, France [Field not mapped to EPrints] AD - CNR-INFM Luxor, Via Gradenigo 6 /B, 35131 Padova, Italy [Field not mapped to EPrints] AD - Department of Information Engineering (DEI), University of Padova, Via Gradenigo 6 /B, 35131 Padova, Italy [Field not mapped to EPrints] AD - Facultà Ingegneria, Università degli Studi di Trento, Via Mesiano 77, 38050 Trento, Italy [Field not mapped to EPrints] AD - INAF - Osservatorio Astronomico de Trieste, Via Tiepolo 11, 34014 Trieste, Italy [Field not mapped to EPrints] AD - Institutut für Datentechnik und Kommunikationsnetzt, Technische Universität Braunschweig, Hans-Sommer-Str. 66, 38106 Braunschweig, Germany [Field not mapped to EPrints] AD - Department of Physics G. Galilei, Via Marzolo 8, 35131 Padova, Italy [Field not mapped to EPrints] AD - Instituto Nacional de Técnica Aerospacial, Carreterade Ajalvir, p.k. 4, 28850 Torrejon de Ardoz (Madrid), Spain [Field not mapped to EPrints] AD - Universidad Politécnica de Madrid, Instituto Ignacio D'Riva, Plaza Cardenal Cisneros s/n, 28040 Madrid, Spain [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: coma, Comet Tempel-1, Comets, Impact processes
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 22:56 UTC
Last Modified: 29 May 2019 16:29 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/52309 (The current URI for this page, for reference purposes)
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