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Photometry of dust grains of comet 67P and connection with nucleus regions

Cremonese, G. and Simioni, Emanuele and Ragazzoni, Roberto and Bertini, I. and La Forgia, Fiorangela and Pajola, M. and Oklay, N. and Fornasier, S. and Lazzarin, M. and Sierks, H. and Barbieri, C. and Lamy, P. and Rodrigo, R. and Koschny, D. and Rickman, H. and Keller, H. U. and A'Hearn, M. F. and Agarwal, J. and Barucci, M. A. and Bertaux, J.-L. and Da Deppo, V. and Davidsson, B. and De Cecco, M. and Debei, S. and Fulle, M. and Groussin, O. and Güttler, C. and Gutierrez, P. J. and Hviid, S. F. and Ip, W-H. and Jorda, L. and Knollenberg, J. and Kramm, J. R. and Kueppers, M. and Kuehrt, E. and Lara, L. M. and Magrin, S. and Lopez Moreno, J. J. and Marzari, F. and Michalik, H. and Mottola, S. and Naletto, G. and Preusker, Frank and Scholten, F. and Thomas, N. and Tubiana, C. and Vincent, J.B. (2016) Photometry of dust grains of comet 67P and connection with nucleus regions. Astronomy and Astrophysics, 588, A59. EDP Sciences. DOI: 10.1051/0004-6361/201527307 ISSN 0004-6361

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Abstract

Aims. Multiple couple of high resolution images of the dust coma of comet 67P have been collected by Osiris on board Rosetta and allowed to extract and to analyze dust grain tracks. We have performed the photometric analysis of 70 dust grain tracks observed on two different images ob- tained in the two filters F24 and F28, centered at λ = 480.7 nm and at λ = 743.7 nm respectively, allowing to derive the color and the reddening of each one. We have then extracted several images of the nucleus observed with the same filters and with the same phase angle to be compared with the dust grain reddening. Methods. We have developed a quasi automatic method to recognize and to extract dust tracks in the Osiris images providing size, FWHM and photometric data. The dust tracks characterized by low signal to noise ratio have been checked manually. Results. Most of the dust grain reddening are very similar to the nucleus values, confirming they come from the surface or sub-surface layer. The histogram of the dust grain reddening has a secondary peak at negative values and shows some grains having values higher than the nucleus suggesting a different composition from the surface grains.

Item URL in elib:https://elib.dlr.de/97560/
Document Type:Article
Title:Photometry of dust grains of comet 67P and connection with nucleus regions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cremonese, G.INAF-Astronomical Observatory of Padova, Vicolo dell’Osservatorio 5, 35131 Padova, e-mail: gabriele.cremonese (at) oapd.inaf.itUNSPECIFIED
Simioni, EmanueleCNR-IFN UOS Padova LUXOR, Via Trasea, 7, 35131 Padova , ItalyUNSPECIFIED
Ragazzoni, RobertoOsservatorio Astronomico di Padova – INAF, ItalyUNSPECIFIED
Bertini, I.Dipartimento di Astronomia, Università di Padova, Padova, ItalyUNSPECIFIED
La Forgia, FiorangelaUniversity of Padova, Department of Physics and Astronomy, Vicolo dell'Osservatorio 3, 35122 Padova, ItalyUNSPECIFIED
Pajola, M.CISAS - Center for Studies and Activities for Space, University of PadovaUNSPECIFIED
Oklay, N.Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, GermanyUNSPECIFIED
Fornasier, S.Observatoire de Paris-Meudon, FranceUNSPECIFIED
Lazzarin, M.Istituto di Astronomia, Università di Padova, Padova, ItalyUNSPECIFIED
Sierks, H.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, GermanyUNSPECIFIED
Barbieri, C.University of Padova, Padova, ItalyUNSPECIFIED
Lamy, P.Laboratoire d'Astronomie Spatiale, Marseille, FranceUNSPECIFIED
Rodrigo, R.Instituto de Astrofísica de Andalucía – CSIC, Granada, SpainUNSPECIFIED
Koschny, D.Research and Scientific Support Department, European Space Agency, 2201 Noordwijk, The NetherlandsUNSPECIFIED
Rickman, H.Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, SwedenUNSPECIFIED
Keller, H. U.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-LindauUNSPECIFIED
A'Hearn, M. F.University of Maryland, Department of Astronomy, Maryland, USAUNSPECIFIED
Agarwal, J.Max-Planck-Institut für SonnensystemforschungUNSPECIFIED
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
Da Deppo, V.Consiglio Nazionale delle Ricerche-Istituto Nazionale per la Fisica della Materia, Luxor, Padova, ItalyUNSPECIFIED
Davidsson, B.Astronomiska observatoriet, Uppsala, SwedenUNSPECIFIED
De Cecco, M.Università di Padova, Center of Studies and Activities of Space (CISAS) "G.Colombo", Padova, ItalyUNSPECIFIED
Debei, S.Università di Padova, Center of Studies and Activities of Space (CISAS) "G.Colombo", Padova, ItalyUNSPECIFIED
Fulle, M.INAF - Osservatorio Astronomico di Trieste, Trieste, ItalyUNSPECIFIED
Groussin, O.Laboratoire d'Astrophysique de Marseille, FranceUNSPECIFIED
Güttler, C.Max-Planck-Institut für SonnensystemforschungUNSPECIFIED
Gutierrez, P. J.Instituto de Astrofísica de Andalucía – CSIC, Granada, SpainUNSPECIFIED
Hviid, S. F.Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, GermanyUNSPECIFIED
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
Kramm, J. R.Max Planck Institute for Solar Systems Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Kueppers, M.Physikalisches Institut ,Universität Bern, Bern, SwitzerlandUNSPECIFIED
Kuehrt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Lara, L. M.Instituto de Astrofisica de Andalucia, CSIC, Granada, SpainUNSPECIFIED
Magrin, S.Department of Astronomy, University of PaduaUNSPECIFIED
Lopez Moreno, J. J.Instituto de Astrofísica de Andalucía, Granada, SpainUNSPECIFIED
Marzari, F.Università di Padova, Departimento di Fisica, Padova, ItalyUNSPECIFIED
Michalik, H.Institut für Datentechnik und Kommunikationsnetze (IDA), Technische Universität Braunschweig, Hans-Sommer-Str. 66, 38106 Braunschweig, GermanyUNSPECIFIED
Mottola, S.stefano.mottola (at) dlr.deUNSPECIFIED
Naletto, G.Università di Padova, Departimento di Elettronica et Informatica, Padova, ItalyUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Scholten, F.frank.scholten (at) dlr.deUNSPECIFIED
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
Date:2016
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:588
DOI :10.1051/0004-6361/201527307
Page Range:A59
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:comet 67P, dust grain, photometry
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
Institute of Planetary Research > Planetary Geodesy
Deposited By: Bründl, Tara-Marie
Deposited On:12 Jul 2016 09:50
Last Modified:08 Mar 2018 18:54

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