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Linking surface morphology, composition, and activity on the nucleus of 67P/Churyumov-Gerasimenko

Fornasier, S. and Hoang, V. H. and Hasselmann, P. H. and Feller, C. and Barucci, M. A. and Deshapriya, J. D. P. and Sierks, H. and Naletto, G. and Lamy, P. L. and Rodrigo, R. and Koschny, D. and Davidsson, B. and Agarwal, J. and Barbieri, C. and Bertaux, J.-L. and Bertini, I. and Bodewits, D. and Cremonese, G. and Da Deppo, V. and Debei, S. and De Cecco, M. and Deller, J. and Ferrari, S. and Fulle, M. and Gutierrez, P. J. and Güttler, C. and Ip, W.-H. and Keller, H. U. and Küppers, M. and La Forgia, F. and Lara, M. L. and Lazzarin, M. and Lin, Z-Y and Lopez Moreno, J. J. and Marzari, F. and Mottola, S. and Pajola, M. and Shi, X. and Toth, I. and Tubiana, C. (2019) Linking surface morphology, composition, and activity on the nucleus of 67P/Churyumov-Gerasimenko. Astronomy & Astrophysics, 630, A7. EDP Sciences. DOI: 10.1051/0004-6361/201833803 ISSN 0004-6361

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Official URL: https://www.aanda.org/articles/aa/abs/2019/10/aa33803-18/aa33803-18.html

Abstract

Aims. The Rosetta space probe accompanied comet 67P/Churyumov-Gerasimenko for more than two years, obtaining an unprecedented amount of unique data of the comet nucleus and inner coma. This has enabled us to study its activity almost continuously from 4 au inbound to 3.6 au outbound, including the perihelion passage at 1.24 au. This work focuses identifying the source regions of faint jets and outbursts and on studying the spectrophotometric properties of some outbursts. We use observations acquired with the OSIRIS/NAC camera during July–October 2015, that is, close to perihelion. Methods. We analyzed more than 2000 images from NAC color sequences acquired with 7–11 filters covering the 250–1000 nm wavelength range. The OSIRIS images were processed with the OSIRIS standard pipeline up to level 3, that is, converted in radiance factor, then corrected for the illumination conditions. For each color sequence, color cubes were produced by stacking registered and illumination-corrected images. Results. More than 200 jets of different intensities were identified directly on the nucleus. Some of the more intense outbursts appear spectrally bluer than the comet dark terrain in the visible-to-near-infrared region.We attribute this spectral behavior to icy grains mixed with the ejected dust. Some of the jets have an extremely short lifetime. They appear on the cometary surface during the color sequence observations, and vanish in less than some few minutes after reaching their peak. We also report a resolved dust plume observed in May 2016 at a resolution of 55 cm pixel

Item URL in elib:https://elib.dlr.de/131454/
Document Type:Article
Title:Linking surface morphology, composition, and activity on the nucleus of 67P/Churyumov-Gerasimenko
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Fornasier, S.LESIA – Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, FranceUNSPECIFIED
Hoang, V. H.LESIA – Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, FranceUNSPECIFIED
Hasselmann, P. H.LESIA – Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, FranceUNSPECIFIED
Feller, C.LESIA, Observatoire de Paris, CNRS, UPMC Univ Paris 06, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, FranceUNSPECIFIED
Barucci, M. A.LESIA, Observatoire de Paris, CNRS, UPMC Univ Paris 06, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, FranceUNSPECIFIED
Deshapriya, J. D. P.LESIA – Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, FranceUNSPECIFIED
Sierks, H.Max-Planck-Institut für Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Göttingen, GermanyUNSPECIFIED
Naletto, G.Univ. of Padova, Dept. of Information Engineering, Padova, ItalyUNSPECIFIED
Lamy, P. L.Aix Marseille Université, CNRS, LAM (Laboratoire dAstro-physique de Marseille)UMR 7326, 13388, Marseille, FranceUNSPECIFIED
Rodrigo, R.Centro de Astrobiología, CSIC-INTA, 28850 Torrejón de Ardoz, Madrid, SpainUNSPECIFIED
Koschny, D.Research and Scientific Support Department, European Space Agency, 2201 Noordwijk,The NetherlandsUNSPECIFIED
Davidsson, B.Jet Propulsion Laboratory, M/S 183-301, 4800 Oak Grove Drive, Pasadena, CA 91109, USAUNSPECIFIED
Agarwal, J.Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, GermanyUNSPECIFIED
Barbieri, C.University of Padova, Department of Physics and Astronomy, vicolo dell’Osservatorio 3, 35122, Padova, ItalyUNSPECIFIED
Bertaux, J.-L.laboratoire atmosphères, milieux, observations spatiales, cnrs/uvsq/upmc, 11 boulevard d’alembert, 78280 guyancourt, franceUNSPECIFIED
Bertini, I.Dipartimento di Astronomia and CISAS, Università di Padova, Padova, ItalyUNSPECIFIED
Bodewits, D.Physics Department, Auburn University, Auburn, AL 36849, USAUNSPECIFIED
Cremonese, G.INAF - Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122, Padova, ItalyUNSPECIFIED
Da Deppo, V.CNR–IFN UOS Padova LUXOR, Via Trasea 7, 35131 Padova, ItalyUNSPECIFIED
Debei, S.Department of Mech. Engineering – University of Padova, via Venezia 1, 35131 Padova, ItalyUNSPECIFIED
De Cecco, M.università di padova, center of studies and activities of space (cisas) "g.colombo", padova, italyUNSPECIFIED
Deller, J.Max-Planck Institut für Sonnensystemforschung, Goettingen, GermanyUNSPECIFIED
Ferrari, S.Center of Studies and Activities for Space (CISAS) “G. Colombo”, University of Padova, Via Venezia 15, 35131 Padova, ItalyUNSPECIFIED
Fulle, M.ISAS, International School for Advanced Studies, Trieste, ItalyUNSPECIFIED
Gutierrez, P. J.Instituto de Astrofísica de Andalucía – CSIC, 18080 Granada, SpainUNSPECIFIED
Güttler, C.Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 337077 Göttingen, GermanyUNSPECIFIED
Ip, W.-H.Institute for Space Science, Nat. Central Univ., 300 Chung Da Rd., 32054, Chung-Li, TaiwanUNSPECIFIED
Keller, H. U.horst.keller (at) dlr.deUNSPECIFIED
Küppers, M.ESA-ESAC, Camino Bajo del Castillo, s/n., 28692 Villanueva de la Cañada, Madrid, SpagnaUNSPECIFIED
La Forgia, F.Dipartimento di Fisica e Astronomia “G. Galilei”, University of Padova, vic. Osservatorio 3, 35122 Padova, Italy, E-Mail: fiorangela.laforgia (at) unipd.itUNSPECIFIED
Lara, M. L.Instituto de Astrofísica de Andalucía (CSIC), c/ Glorieta de la Astronomía s/n, 18008 Granada, Spain.UNSPECIFIED
Lazzarin, M.Dipartimento di Fisica e Astronomia “G. Galilei”, University of Padova, vic. Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Lin, Z-YNational Central University, Graduate Institute of Astronomy, 300 Chung-Da Rd, Chung-Li 32054, TaiwanUNSPECIFIED
Lopez Moreno, J. J.Instituto de Astrofisica de Andalucía (CSIC), Glorieta de la As- tronomía s/n, 18008 Granada, SpainUNSPECIFIED
Marzari, F.Department of Physics and Astronomy “G. Galilei”, University of Padova, ItalyUNSPECIFIED
Mottola, S.stefano.mottola (at) dlr.dehttps://orcid.org/0000-0002-0457-3872
Pajola, M.Department of Physics and Astronomy Galileo Galilei, University of Padova, Via Marzolo 8, 35131 Padova, ItalyUNSPECIFIED
Shi, X.Max-Planck-Institut für Sonnensystemforschung, Justus-von- Liebig-Weg, 3 37077 Göttingen, GermanyUNSPECIFIED
Toth, I.Konkoly Observatory, Budapest H-1525, P.O. Box 67, HungaryUNSPECIFIED
Tubiana, C.Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, GermanyUNSPECIFIED
Date:2019
Journal or Publication Title:Astronomy & Astrophysics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:630
DOI :10.1051/0004-6361/201833803
Page Range:A7
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:comets: individual: 67P/Churyumov-Gerasimenko – methods: data analysis – methods: observational – techniques: photometric
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: Mottola, Dr.phys. Stefano
Deposited On:28 Nov 2019 09:42
Last Modified:28 Nov 2019 09:42

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