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Constraints on cometary surface evolution derived from a statistical analysis of 67P's topography

Vincent, J.B. and Hviid, S. and Mottola, S. and Kuehrt, E. and Preusker, Frank and Scholten, Frank and Keller, Horst Uwe and Oklay, N. and de Niem, D. and Davidsson, B. and Fulle, M. and Pajola, M. and Hofmann, M. and Hu, X. and Rickman, Hans and Lin, Z.-Y. and Feller, Clement and Gicquel, A. and Boudreault, S. and Sierks, H. and Barbieri, C. and Lamy, P. L. and Rodrigo, Rafael and Koschny, Detlef and A'Hearn, M. F. and Barucci, M. A. and Bertaux, J.-L. and Bertini, I. and Cremonese, G. and Da Deppo, V. and Debei, S. and De Cecco, M. and Deller, J. and Fornasier, S. and Groussin, Olivier and Gutierrez, P.J. and Gutiérrez-Marquez, P and Güttler, C. and Ip, W-H. and Jorda, L and Knollenberg, J. and Kovacs, G. and Kramm, J. R. and Küppers, Michael and Lara López, Luisa M. and Lazzarin, M. and Lopez Moreno, J. and Marzari, F. and Naletto, G. and penasa, L. and Shi, X. and Thomas, N. and Toth, I. and Tubiana, C. (2017) Constraints on cometary surface evolution derived from a statistical analysis of 67P's topography. Monthly Notices of the Royal Astronomical Society, 469, S329-S338. Oxford University Press. DOI: 10.1093/mnras/stx1691 ISSN 0035-8711

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Abstract

We present a statistical analysis of the distribution of large-scale topographic features on comet 67P/Churyumov-Gerasimenko. We observe that the cumulative cliff height distribution across the surface follows a power law with a slope equal to -1.69 ± 0.02. When this distribution is studied independently for each region, we find a good correlation between the slope of the power law and the orbital erosion rate of the surface. For instance, the Northern hemisphere topography is dominated by structures on the 100 m scale, while the Southern hemisphere topography, illuminated at perihelion, is dominated by 10 m scale terrain features. Our study suggests that the current size of a cliff is controlled not only by material cohesion but also by the dominant erosional process in each region. This observation can be generalized to other comets, where we argue that primitive nuclei are characterized by the presence of large cliffs with a cumulative height-power index equal to or above -1.5, while older, eroded cometary surfaces have a power index equal to or below -2.3. In effect, our model shows that a measure of the topography provides a quantitative assessment of a comets erosional history, that is, its evolutionary age.

Item URL in elib:https://elib.dlr.de/114254/
Document Type:Article
Title:Constraints on cometary surface evolution derived from a statistical analysis of 67P's topography
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vincent, J.B.jean-baptiste.vincent (at) dlr.deUNSPECIFIED
Hviid, S.stubbe.hviid (at) dlr.deUNSPECIFIED
Mottola, S.stefano.mottola (at) dlr.deUNSPECIFIED
Kuehrt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Scholten, Frankfrank.scholten (at) dlr.deUNSPECIFIED
Keller, Horst Uwehorst.keller (at) dlr.deUNSPECIFIED
Oklay, N.nilda.oklayvincent (at) dlr.deUNSPECIFIED
de Niem, D.detlef.deniem (at) dlr.deUNSPECIFIED
Davidsson, B.astronomiska observatoriet, uppsala, swedenUNSPECIFIED
Fulle, M.inaf - osservatorio astronomico di trieste, trieste, italyUNSPECIFIED
Pajola, M.cisas - center for studies and activities for space, university of padovaUNSPECIFIED
Hofmann, M.max-planck-institut für sonnensystemforschung, göttingen, germanyUNSPECIFIED
Hu, X.institute for geophysics and extraterrestrial physics, tu braunschweig, 38106 braunschweig, germanyUNSPECIFIED
Rickman, Hansuppsala astronomical observatoryUNSPECIFIED
Lin, Z.-Y.national central university, jhongli, taoyuan, taiwanUNSPECIFIED
Feller, Clementlesia, observatoire de paris, cnrs, upmc univ paris 06, univ. paris-diderot, 5 place j. janssen, 92195 meudon pricipal cedex, franceUNSPECIFIED
Gicquel, A.max-planck institut für sonnensystemforschung, goettingen, germanyUNSPECIFIED
Boudreault, S.max-planck-institut für sonnensystemforschung, 37077 göttingen, germanyUNSPECIFIED
Sierks, H.max-planck-institut für sonnensystemforschung, katlenburg-lindau, germanyUNSPECIFIED
Barbieri, C.university of padova, padova, italyUNSPECIFIED
Lamy, P. L.aix-marseille universite, cnrs, lamUNSPECIFIED
Rodrigo, Rafaelinstituto de astrofisica de andaluciaUNSPECIFIED
Koschny, Detlefestec, the netherlandsUNSPECIFIED
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
Cremonese, G.osservatorio astronomico, padova, italyUNSPECIFIED
Da Deppo, V.consiglio nazionale delle ricerche-istituto nazionale per la fisica della materia, luxor, padova, italyUNSPECIFIED
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
Fornasier, S.observatoire de paris-meudon, franceUNSPECIFIED
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
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
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
Marzari, F.università di padova, departimento di fisica, padova, italyUNSPECIFIED
Naletto, G.università di padova, departimento di elettronica et informatica, padova, italyUNSPECIFIED
penasa, L.center of studies and activities for space cisac, padovaUNSPECIFIED
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:2017
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
Volume:469
DOI :10.1093/mnras/stx1691
Page Range:S329-S338
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:Rosetta, comet, 67P, surface evolution, topography, statistical 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 > Planetary Geodesy
Deposited By: Schubert, Renate
Deposited On:20 Sep 2017 13:01
Last Modified:06 Sep 2019 15:17

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