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Detection of exposed H2O ice on the nucleus of comet 67P/Churyumov-Gerasimenko. as observed by Rosetta OSIRIS and VIRTIS instruments

Barucci, M. A. and Filaccione, G. and Fornasier, S. and Raponi, A. and Deshapriya Sonia, Prasanna and Tosi, F. and Feller, Clement and Ciarniello, M. and Sierks, H. and Capaccioni, F. and Pommerol, Antoine and Massironi, Matteo and Oklay, N. and Merlin, F. and Vincent, J.B. and Fulchignoni, M. and Guilbert-Lepoutre, Aurélie and Perna, D. and Capria, M. T. and Hasselmann, Pedro and Rousseau, Batiste and Barbieri, C. and Bockelee-Morvan, D. and Lamy, P. and De Sanctis, M.C. and Rodrigo, Rafael and Erard, S. and Koschny, Detlef and Leyrat, C. and Rickman, Hans and Drossart, P. and Keller, H. U. and A'Hearn, M. F. and Arnold, Gabriele and Bertaux, J.-L. and Bertini, I. and Cerroni, P. and Cremonese, G. and Da Deppo, V. and Davidsson, B. and El-Maarry, M. R. and Fonti, S. and Fulle, M. and Groussin, Olivier and Güttler, C. and Hviid, S. and Ip, W-H. and Jorda, L and Kappel, David and Knollenberg, J. and Kramm, J. R. and Kührt, E. and Küppers, Michael and Lara López, Luisa M. and Lazzarin, M. and Lopez Moreno, J. and Mancarella, F. and Marzari, F. and Mottola, Stefano and Naletto, G. and Pajola, M. and Palomba, E. and Quirico, E. and Schmitt, B. and Thomas, N. and Tubiana, C. (2016) Detection of exposed H2O ice on the nucleus of comet 67P/Churyumov-Gerasimenko. as observed by Rosetta OSIRIS and VIRTIS instruments. Astronomy & Astrophysics. EDP Sciences. DOI: 10.1051/0004-6361/201628764 ISSN 0004-6361

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Official URL: http://www.aanda.org/articles/aa/abs/2016/11/aa28764-16/aa28764-16.html

Abstract

Context. Since the orbital insertion of the Rosetta spacecraft, comet 67P/Churyumov-Gerasimenko (67P) has been mapped by OSIRIS camera and VIRTIS spectro-imager, producing a huge quantity of images and spectra of the comet’s nucleus. Aims. The aim of this work is to search for the presence of H2O on the nucleus which, in general, appears very dark and rich in dehydrated organic material. After selecting images of the bright spots which could be good candidates to search for H2O ice, taken at high resolution by OSIRIS, we check for spectral cubes of the selected coordinates to identify these spots observed by VIRTIS. Methods. The selected OSIRIS images were processed with the OSIRIS standard pipeline and corrected for the illumination conditions for each pixel using the Lommel-Seeliger disk law. The spots with higher I/F were selected and then analysed spectrophotometrically and compared with the surrounding area. We selected 13 spots as good targets to be analysed by VIRTIS to search for the 2µm absorption band of water ice in the VIRTIS spectral cubes. Results. Out of the 13 selected bright spots, eight of them present positive H2O ice detection on the VIRTIS data. A spectral analysis was performed and the approximate temperature of each spot was computed. The H2O ice content was confirmed by modeling the spectra with mixing (areal and intimate) of H2O ice and dark terrain, using Hapke’s radiative transfer modeling. We also present a detailed analysis of the detected spots.

Item URL in elib:https://elib.dlr.de/108478/
Document Type:Article
Title:Detection of exposed H2O ice on the nucleus of comet 67P/Churyumov-Gerasimenko. as observed by Rosetta OSIRIS and VIRTIS instruments
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Barucci, M. A.observatoire de paris, meudon, franceUNSPECIFIED
Filaccione, G.iasf istituto astrofisica spaziale fisica cosmica, via fosso cavaliere 100, 00133 roma, italyUNSPECIFIED
Fornasier, S.observatoire de paris-meudon, franceUNSPECIFIED
Raponi, A.inaf-iasf, italyUNSPECIFIED
Deshapriya Sonia, Prasannaobservatoire de paris-meudon, franceUNSPECIFIED
Tosi, F.inaf-iasf istituto di astrofisica spaziale e fisica cosmica, roma italyUNSPECIFIED
Feller, Clementlesia, observatoire de paris, cnrs, upmc univ paris 06, univ. paris-diderot, 5 place j. janssen, 92195 meudon pricipal cedex, franceUNSPECIFIED
Ciarniello, M.inaf-iasf, italyUNSPECIFIED
Sierks, H.max-planck-institut für sonnensystemforschung, katlenburg-lindau, germanyUNSPECIFIED
Capaccioni, F.inaf-iasf, italyUNSPECIFIED
Pommerol, Antoinephysikalisches institut, sidlerstrasse 5, university of bern, 3012, bern, switzerlandUNSPECIFIED
Massironi, Matteoinaf, padova, iUNSPECIFIED
Oklay, N.max-planck-institut für sonnensystemforschungUNSPECIFIED
Merlin, F.lesia-observatoire de parisUNSPECIFIED
Vincent, J.B.max-planck-institut fuer sonnensystemforschung, germanyUNSPECIFIED
Fulchignoni, M.marcello.fulchignoni (at) obspm.frUNSPECIFIED
Guilbert-Lepoutre, Aurélieuniversity of maryland, department of astronomy, college park, maryland 20742-2421, usaUNSPECIFIED
Perna, D.lesia-observatoire de paris, franceUNSPECIFIED
Capria, M. T.instituto di astrofisica spaziale e fisica cosmica, roma, italyUNSPECIFIED
Hasselmann, Pedrolesia, observatoire de paris, cnrs, upmc univ paris 06, univ. paris-diderot, 5 place j. janssen, 92195 meudon pricipal cedex, franceUNSPECIFIED
Rousseau, BatistelesiaUNSPECIFIED
Barbieri, C.university of padova, padova, italyUNSPECIFIED
Bockelee-Morvan, D.observatoire de paris, meudonUNSPECIFIED
Lamy, P.laboratoire d'astronomie spatiale, marseille, franceUNSPECIFIED
De Sanctis, M.C.istituto nazionale di astrofisica, rome, italy.UNSPECIFIED
Rodrigo, Rafaelinstituto de astrofisica de andaluciaUNSPECIFIED
Erard, S.lesiaUNSPECIFIED
Koschny, Detlefestec, the netherlandsUNSPECIFIED
Leyrat, C.lesiaUNSPECIFIED
Rickman, Hansuppsala astronomical observatoryUNSPECIFIED
Drossart, P.observatoire de paris, meudon, franceUNSPECIFIED
Keller, H. U.max-planck-institut für sonnensystemforschung, katlenburg-lindauUNSPECIFIED
A'Hearn, M. F.university of maryland, department of astronomy, maryland, usaUNSPECIFIED
Arnold, Gabrielegabriele.arnold (at) dlr.deUNSPECIFIED
Bertaux, J.-L.laboratoire atmosphères, milieux, observations spatiales, cnrs/uvsq/upmc, 11 boulevard d’alembert, 78280 guyancourt, franceUNSPECIFIED
Bertini, I.dipartimento di astronomia, università di padova, padova, italyUNSPECIFIED
Cerroni, P.inaf-iasf, rome, italyUNSPECIFIED
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
El-Maarry, M. R.physikalisches institut, sidlerstrasse 5, university of bern, ch-3012 bern, switzerlandUNSPECIFIED
Fonti, S.dipartimento di fisica, università di lecce, italyUNSPECIFIED
Fulle, M.inaf - osservatorio astronomico di trieste, trieste, 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, Llam, marseilleUNSPECIFIED
Kappel, Daviddavid.kappel (at) dlr.deUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
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
Mancarella, F.dipartimento di matematica e fisica "e. de giorgi", università del salento, lecce, italyUNSPECIFIED
Marzari, F.università di padova, departimento di fisica, padova, italyUNSPECIFIED
Mottola, Stefanostefano.mottola (at) dlr.deUNSPECIFIED
Naletto, G.università di padova, departimento di elettronica et informatica, padova, italyUNSPECIFIED
Pajola, M.cisas - center for studies and activities for space, university of padovaUNSPECIFIED
Palomba, E.institute for interplanetary space physics - inaf, rome, italyUNSPECIFIED
Quirico, E.laboratory of planetology, cnrs joseph fourier universityUNSPECIFIED
Schmitt, B.grenoble planetology laboratoryUNSPECIFIED
Thomas, N.max-planck-institut für aeronomie, katlenburg-lindauUNSPECIFIED
Tubiana, C.max-planck-institut fuer sonnensystemforschung, germanyUNSPECIFIED
Date:2016
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
DOI :10.1051/0004-6361/201628764
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:comets: individual: 67P/Churyumov-Gerasimenko / techniques: imaging spectroscopy / techniques: photometric / techniques: image processing / methods: data analysis
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
Institute of Planetary Research > Leitungsbereich PF
Deposited By: Schubert, Renate
Deposited On:30 Nov 2016 08:15
Last Modified:08 Mar 2018 18:23

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