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The pristine interior of comet 67P revealed by the combined Aswan outburst and cliff collapse

Pajola, M. and Höfner, S. and Vincent, Jean-Baptiste and Oklay, Nilda and Scholten, Frank and Preusker, Frank and Mottola, Stefano and Naletto, G. and Fornasier, S. and Lowry, S. and Feller, Clement and Hasselmann, Pedro and Güttler, C. and Tubiana, C. and Sierks, H. and Barbieri, C. and Lamy, P. and Rodrigo, Rafael and Koschny, Detlef and Rickman, Hans and Keller, H. U. and Agarwal, J. and A'Hearn, M. F. and Barucci, M. A. and Bertaux, J.-L. and Bertini, I. and Besse, Sebastien and Boudreault, S. and Cremonese, G. and Da Deppo, V. and Davidsson, B. and Debei, S. and De Cecco, M. and Deller, J. and Deshapriya, J. D. P. and El-Maarry, M. R. and Ferrari, Sabrina and Ferri, F. and Fulle, M. and Groussin, Olivier and Gutierrez, P. J. and Hofmann, M. and Hviid, Stubbe and Ip, W-H. and Jorda, L and Knollenberg, Jörg and Kovacs, G. and Kramm, J. R. and Kührt, Ekkehard and Küppers, M. and Lara, L. M. and Lin, Z.-Y. and Lazzarin, M. and Lucchetti, A. and Moreno, J. J. Lopez and Marzari, F. and Massironi, Matteo and Michalik, H. and penasa, L. and Pommerol, Antoine and Simioni, Emanuele and Thomas, N. and Toth, I. and Baratti, E. (2017) The pristine interior of comet 67P revealed by the combined Aswan outburst and cliff collapse. Nature Astronomy, 1 (2). Nature Publishing Group. DOI: 10.1038/s41550-017-0092 ISSN 2397-3366

Full text not available from this repository.

Official URL: http://www.nature.com/articles/s41550-017-0092

Abstract

Outbursts occur commonly on comets1 with different frequencies and scales2,3. Despite multiple observations suggesting various triggering processes4,5, the driving mechanism of such outbursts is still poorly understood. Landslides have been invoked6 to explain some outbursts on comet 103P/Hartley 2, although the process required a pre-existing dust layer on the verge of failure. The Rosetta mission observed several outbursts from its target comet 67P/Churyumov-Gerasimenko, which were attributed to dust generated by the crumbling of materials from collapsing cliffs7,8. However, none of the aforementioned works included definitive evidence that landslides occur on comets. Amongst the many features observed by Rosetta on the nucleus of the comet, one peculiar fracture, 70 m long and 1 m wide, was identified on images obtained in September 2014 at the edge of a cliff named Aswan9. On 10 July 2015, the Rosetta Navigation Camera captured a large plume of dust that could be traced back to an area encompassing the Aswan escarpment7. Five days later, the OSIRIS camera observed a fresh, sharp and bright edge on the Aswan cliff. Here we report the first unambiguous link between an outburst and a cliff collapse on a comet. We establish a new dust-plume formation mechanism that does not necessarily require the breakup of pressurized crust or the presence of supervolatile material, as suggested by previous studies7. Moreover, the collapse revealed the fresh icy interior of the comet, which is characterized by an albedo >0.4, and provided the opportunity to study how the crumbling wall settled down to form a new talus.

Item URL in elib:https://elib.dlr.de/115218/
Document Type:Article
Title:The pristine interior of comet 67P revealed by the combined Aswan outburst and cliff collapse
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pajola, M.cisas - center for studies and activities for space, university of padovaUNSPECIFIED
Höfner, S.max-planck-institut für sonnensystemforschung, göttingen, germanyUNSPECIFIED
Vincent, Jean-BaptisteJean-Baptiste.Vincent (at) dlr.deUNSPECIFIED
Oklay, NildaNilda.OklayVincent (at) dlr.dehttps://orcid.org/0000-0002-4909-9692
Scholten, FrankFrank.Scholten (at) dlr.deUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Mottola, StefanoStefano.Mottola (at) dlr.deUNSPECIFIED
Naletto, G.università di padova, departimento di elettronica et informatica, padova, italyUNSPECIFIED
Fornasier, S.observatoire de paris-meudon, franceUNSPECIFIED
Lowry, S.university of kent, canterbury, ukUNSPECIFIED
Feller, Clementlesia, observatoire de paris, cnrs, upmc univ paris 06, univ. paris-diderot, 5 place j. janssen, 92195 meudon pricipal cedex, franceUNSPECIFIED
Hasselmann, Pedrolesia, observatoire de paris, cnrs, upmc univ paris 06, univ. paris-diderot, 5 place j. janssen, 92195 meudon pricipal cedex, franceUNSPECIFIED
Güttler, C.max-planck-institut für sonnensystemforschungUNSPECIFIED
Tubiana, C.max-planck-institut fuer sonnensystemforschung, germanyUNSPECIFIED
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, Rafaelinstituto de astrofisica de andaluciaUNSPECIFIED
Koschny, Detlefestec, the netherlandsUNSPECIFIED
Rickman, Hansuppsala astronomical observatoryUNSPECIFIED
Keller, H. U.horst.keller (at) dlr.deUNSPECIFIED
Agarwal, J.max-planck-institut für sonnensystemforschungUNSPECIFIED
A'Hearn, M. F.university of maryland, department of astronomy, maryland, usaUNSPECIFIED
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
Bertini, I.dipartimento di astronomia, università di padova, padova, italyUNSPECIFIED
Besse, Sebastienscientific support office, european space agency, 2201, noordwijk, netherlands.UNSPECIFIED
Boudreault, S.max-planck-institut für sonnensystemforschung, 37077 göttingen, germanyUNSPECIFIED
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
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
Deshapriya, J. D. P.lesiaUNSPECIFIED
El-Maarry, M. R.physikalisches institut, sidlerstrasse 5, university of bern, ch-3012 bern, switzerlandUNSPECIFIED
Ferrari, Sabrinadipartimento di geoscienze, università degli studi di padova, italyUNSPECIFIED
Ferri, F.university of padova, padova, italyUNSPECIFIED
Fulle, M.inaf - osservatorio astronomico di trieste, trieste, italyUNSPECIFIED
Groussin, Olivierlab. d'astrophysique de marseille, franceUNSPECIFIED
Gutierrez, P. J.instituto de astrofísica de andalucía – csic, granada, spainUNSPECIFIED
Hofmann, M.max-planck-institut für sonnensystemforschung, göttingen, germanyUNSPECIFIED
Hviid, StubbeStubbe.Hviid (at) dlr.deUNSPECIFIED
Ip, W-H.institute for space science, national central university, chung li, taiwanUNSPECIFIED
Jorda, Llam, marseilleUNSPECIFIED
Knollenberg, JörgJoerg.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, EkkehardEkkehard.Kuehrt (at) dlr.deUNSPECIFIED
Küppers, M.esa/esac, po box 78, 28691 villanueva de la cañada, spainUNSPECIFIED
Lara, L. M.instituto de astrofisica de andalucia, csic, granada, spainUNSPECIFIED
Lin, Z.-Y.national central university, jhongli, taoyuan, taiwanUNSPECIFIED
Lazzarin, M.department of astronomy, university of paduaUNSPECIFIED
Lucchetti, A.center of studies and activities for space, cisas, g. colombo, university of padova, via venezia 15, 35131, padova, italyUNSPECIFIED
Moreno, J. J. Lopeznstituto de astrofísica de andalucía-csic, e-18008 granada, spainUNSPECIFIED
Marzari, F.università di padova, departimento di fisica, padova, italyUNSPECIFIED
Massironi, Matteoinaf, padova, iUNSPECIFIED
Michalik, H.institut für datentechnik und kommunikationsnetze (ida), technische universität braunschweig, hans-sommer-str. 66, 38106 braunschweig, germanyUNSPECIFIED
penasa, L.center of studies and activities for space cisac, padovaUNSPECIFIED
Pommerol, Antoinephysikalisches institut, sidlerstrasse 5, university of bern, 3012, bern, switzerlandUNSPECIFIED
Simioni, Emanuelecnr-ifn uos padova luxor, via trasea, 7, 35131 padova , italyUNSPECIFIED
Thomas, N.university of bern, switzerlandUNSPECIFIED
Toth, I.konkoly observatory, mta csfk csiUNSPECIFIED
Baratti, E.Univ Bologna, Sch Civil Engn, Dept DICAM, Bologna, ItalyUNSPECIFIED
Date:May 2017
Journal or Publication Title:Nature Astronomy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:1
DOI :10.1038/s41550-017-0092
Publisher:Nature Publishing Group
ISSN:2397-3366
Status:Published
Keywords:Rosetta, comet, 67P, Aswan, outburst, cliff, collapse
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: Scholten, Dipl.-Ing. Frank
Deposited On:13 Nov 2017 10:58
Last Modified:13 Jun 2018 14:19

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