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Sublimation of icy aggregates in the coma of comet 67P/Churyumov–Gerasimenko detected with the OSIRIS cameras on board Rosetta

Gicquel, A. and Vincent, J.B. and Agarwal, J. and A'Hearn, M. F. and Bertini, I. and Bodewits, Dennis and Sierks, H. and Lin, Z.-Y. and Barbieri, C. and Lamy, P. and Rodrigo, Rafael and Koschny, Detlef and Rickmann, H. and Keller, H.-U. and Barucci, M. A. and Bertaux, J.-L. and Besse, Sebastien and Cremonese, G. and Da Deppo, V. and Davidsson, B. and Debei, S. and Deller, J. and De Cecco, M. and Frattin, E. and El-Maarry, M. R. and Fornasier, S. and Fulle, M. and Groussin, Olivier and Gutierrez, P.J. and Gutiérrez-Marquez, P and Güttler, C. and Höfner, S. and Hofmann, Mathias and Hu, Xuan 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, Michael and Lara López, Luisa M. and Lazzarin, M. and Lopez Moreno, J. and Lowry, S. and Marzari, F. and Masoumzadeh, Nafiseh and Massironi, Matteo and Moreno, F. and Mottola, S. and Naletto, G. and Oklay, N. and Pajola, M. and Pommerol, Antoine and Preusker, Frank and Scholten, Frank and Shi, X. and Thomas, N. and Toth, I. and Tubiana, C. (2016) Sublimation of icy aggregates in the coma of comet 67P/Churyumov–Gerasimenko detected with the OSIRIS cameras on board Rosetta. Monthly Notices of the Royal Astronomical Society. Oxford University Press. DOI: 10.1093/mnras/stw2117 ISSN 0035-8711

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Abstract

Beginning in 2014 March, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) cameras began capturing images of the nucleus and coma (gas and dust) of comet 67P/Churyumov–Gerasimenko using both the wide angle camera (WAC) and the narrow angle camera (NAC). The many observations taken since July of 2014 have been used to study the morphology, location, and temporal variation of the comet’s dust jets. We analysed the dust monitoring observations shortly after the southern vernal equinox on 2015 May 30 and 31 with the WAC at the heliocentric distance Rh = 1.53 AU, where it is possible to observe that the jet rotates with the nucleus. We found that the decline of brightness as a function of the distance of the jet is much steeper than the background coma, which is a first indication of sublimation. We adapted a model of sublimation of icy aggregates and studied the effect as a function of the physical properties of the aggregates (composition and size). The major finding of this paper was that through the sublimation of the aggregates of dirty grains (radius a between 5 and 50 μm) we were able to completely reproduce the radial brightness profile of a jet beyond 4 km from the nucleus. To reproduce the data, we needed to inject a number of aggregates between 8.5 × 10_13 and 8.5 × 10_10 for a = 5 and 50 μm, respectively, or an initial mass of H2O ice around 22 kg.

Item URL in elib:https://elib.dlr.de/108192/
Document Type:Article
Title:Sublimation of icy aggregates in the coma of comet 67P/Churyumov–Gerasimenko detected with the OSIRIS cameras on board Rosetta
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gicquel, A.lesiaUNSPECIFIED
Vincent, J.B.max-planck-institut fuer sonnensystemforschung, germanyUNSPECIFIED
Agarwal, J.max-planck-institut für sonnensystemforschungUNSPECIFIED
A'Hearn, M. F.university of maryland, department of astronomy, maryland, usaUNSPECIFIED
Bertini, I.dipartimento di astronomia, università di padova, padova, italyUNSPECIFIED
Bodewits, Dennisdepartment of astronomy, university of maryland, college park, md 20742-2421, usaUNSPECIFIED
Sierks, H.max-planck-institut für sonnensystemforschung, katlenburg-lindau, germanyUNSPECIFIED
Lin, Z.-Y.national central university, jhongli, taoyuan, taiwanUNSPECIFIED
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
Rickmann, H.10Department of Physics and Astronomy, Uppsala University, SwedenUNSPECIFIED
Keller, H.-U.max-planck-institut für aeronomie, katlenburg-lindauUNSPECIFIED
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
Besse, Sebastienscientific support office, european space agency, 2201, noordwijk, netherlands.UNSPECIFIED
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
Deller, J.mpsUNSPECIFIED
De Cecco, M.università di padova, center of studies and activities of space (cisas) "g.colombo", padova, italyUNSPECIFIED
Frattin, E.INAF Osservatorio Astronomico di Padova, Padova, ItalyUNSPECIFIED
El-Maarry, M. R.physikalisches institut, sidlerstrasse 5, university of bern, ch-3012 bern, switzerlandUNSPECIFIED
Fornasier, S.observatoire de paris-meudon, franceUNSPECIFIED
Fulle, M.inaf - osservatorio astronomico di trieste, trieste, italyUNSPECIFIED
Groussin, Olivierlab. d'astrophysique de marseille, franceUNSPECIFIED
Gutierrez, P.J.iaa-csic, granada, spainUNSPECIFIED
Gutiérrez-Marquez, Pinstituto de astrofísica de andalucía (csic), granada, spainUNSPECIFIED
Güttler, C.max-planck-institut für sonnensystemforschungUNSPECIFIED
Höfner, S.max-planck-institut für sonnensystemforschung, göttingen, germanyUNSPECIFIED
Hofmann, Mathiasmathias.hofmann (at) dlr.deUNSPECIFIED
Hu, Xuantampere university of technologyUNSPECIFIED
Hviid, S.stubbe.hviid (at) dlr.deUNSPECIFIED
Ip, W-H.institute for space science, national central university, chung li, taiwanUNSPECIFIED
Jorda, Llam, marseilleUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
Kovacs, G.max–planck–institut für sonnensystemforschung, justus–von–UNSPECIFIED
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
Lara López, Luisa M.iaa-csic granada, spainUNSPECIFIED
Lazzarin, M.department of astronomy, university of paduaUNSPECIFIED
Lopez Moreno, J.instituto de astrofifica de andalucia-consejo superior de investigaciones cientificas, granada, spainUNSPECIFIED
Lowry, S.university of kent, canterbury, ukUNSPECIFIED
Marzari, F.università di padova, departimento di fisica, padova, italyUNSPECIFIED
Masoumzadeh, Nafisehmax planck institute for solar system research, katlenburg-lindau, germanyUNSPECIFIED
Massironi, Matteoinaf, padova, iUNSPECIFIED
Moreno, F.instituto de astrofísica de andalucía, consejo superior de investigaciones científicas (csic), p.o. box 3008, 18080 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
Pajola, M.cisas - center for studies and activities for space, university of padovaUNSPECIFIED
Pommerol, Antoinephysikalisches institut, sidlerstrasse 5, university of bern, 3012, bern, switzerlandUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Scholten, Frankfrank.scholten (at) dlr.deUNSPECIFIED
Shi, X.technical university berlin, germany ; shanghai astronomical observatory, shanghai, china,UNSPECIFIED
Thomas, N.max-planck-institut für aeronomie, katlenburg-lindauUNSPECIFIED
Toth, I.konkoly observatory, mta csfk csiUNSPECIFIED
Tubiana, C.max-planck-institut fuer sonnensystemforschung, germanyUNSPECIFIED
Date:2016
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1093/mnras/stw2117
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:methods: data analysis methods: numerical methods: observational comets: individual: 67P/Churyumov–Gerasimenko
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, R - Projekt ROSETTA Lander
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Schubert, Renate
Deposited On:24 Nov 2016 10:29
Last Modified:06 Sep 2019 15:17

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