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Thermal modelling of water activity on comet 67P/Churyumov-Gerasimenko with global dust mantle and plural dust-to-ice ratio

Hu, Xuanyu and Shi, Xian and Sierks, Holger and Blum, Jürgen and Oberst, Jürgen and Fulle, Marco and Kührt, Ekkehard and Güttler, Carsten and Gundlach, Bastian and Keller, Horst U. and Mottola, Stefano and Pajola, Maurizio and Barbieri, Cesare and Lamy, Philippe and Rodrigo, Rafael and Koschny, Detlef and Rickman, Hans and Agarwal, Jessica and A'Hearn, Michael F. and Barucci, Maria Antonetta and Bertaux, J.–L and Bertini, Ivano and Boudreault, Steve and Bütner, Irene and Cremonese, Gabriele and Deppo, Vania Da and Davidsson, Björn and Debei, Stefano and De Cecco, Mariolino and Deller, Jakob and Fornasier, Sonia and Groussin, Olivier and Gutierrez, Pedro J. and Gutierrez-Marques, Pablo and Hall, I. and Hofman, Marc and Hviid, Stubbe and Ip, Wing-Huen and Jorda, Laurent and Knollenberg, Jörg and Kovacs, Gabor and Kramm, J.-Rainer and Küppers, Michael and Lara, Luisa M. and Lazzarin, Monica and López-Moreno, J. J. and Marzari, Francesco and Naletto, Giampiero and Oklay, Nilda and Richards, Michael L. and Ripken, Joachim and Thomas, Nicolas and Tubiana, Cecilia and Vincent, Jean-Baptiste (2017) Thermal modelling of water activity on comet 67P/Churyumov-Gerasimenko with global dust mantle and plural dust-to-ice ratio. Monthly Notices of the Royal Astronomical Society, 469, pp. 295-311. Oxford University Press. doi: 10.1093/mnras/stx1607. ISSN 0035-8711.

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Official URL: https://hal-insu.archives-ouvertes.fr/insu-01574567

Abstract

We perform a thermo-physical analysis on water activity of comet 67P/Churyumov-Gerasimenko (67P). The sublimation of water is assumed to occur from beneath a global, desiccated dust mantle over the irregular-shaped nucleus. The concept of two thermal models, the recipe of model formulation and the strategy of application to comet 67P are described. For an accurate and efficient evaluation of energy input by insolation and self-heating over the nucleus, a Landscape data base is devised based on polyhedral shape models of the nucleus. We apply the thermal models to investigate the impact of certain parameters of nucleus properties on water production. It is found that the measured water production of 67P can be overall attributed to sublimation of water ice with a mass abundance of a few to 10 per cent beneath a uniform dust mantle of several millimetres to one centimetre in thickness. Insofar as 67P is concerned, we argue against the necessity to invoke assumptions on localized water activity, or on the distinction of active/dormant surface areas.

Item URL in elib:https://elib.dlr.de/117435/
Document Type:Article
Title:Thermal modelling of water activity on comet 67P/Churyumov-Gerasimenko with global dust mantle and plural dust-to-ice ratio
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Hu, XuanyuMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 GöttingenUNSPECIFIEDUNSPECIFIED
Shi, Xianmax-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingenUNSPECIFIEDUNSPECIFIED
Sierks, HolgerMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, GermanyUNSPECIFIEDUNSPECIFIED
Blum, Jürgeninstitut für geophysik und extraterrestrische physik (igep), technische universität braunschweig, mendelssohnstr. 3, 38106 braunschweig, germanyUNSPECIFIEDUNSPECIFIED
Oberst, JürgenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fulle, MarcoINAF, Osservatorio Astronomico, Via Tiepolo 11, 34014 Trieste, ItalyUNSPECIFIEDUNSPECIFIED
Kührt, EkkehardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Güttler, CarstenMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, GermanyUNSPECIFIEDUNSPECIFIED
Gundlach, Bastianinstitut für geophysik und extraterrestrische physik (igep), technische universität braunschweig, mendelssohnstr. 3, 38106 braunschweig, germanyUNSPECIFIEDUNSPECIFIED
Keller, Horst U.Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, 38106, Braunschweig, GermanyUNSPECIFIEDUNSPECIFIED
Mottola, StefanoUNSPECIFIEDhttps://orcid.org/0000-0002-0457-3872UNSPECIFIED
Pajola, MaurizioARC - NASA Ames Research CenterUNSPECIFIEDUNSPECIFIED
Barbieri, CesareUniversity of Padua, Dept. of Astronomy, Padova, ItalyUNSPECIFIEDUNSPECIFIED
Lamy, PhilippeLaboratoire d'Astrophysique MarseilleUNSPECIFIEDUNSPECIFIED
Rodrigo, RafaelCentro de Astrobiologia, CSIC-INTA, 28850 Torrejon de Ardoz, Madrid, SpainUNSPECIFIEDUNSPECIFIED
Koschny, DetlefResearch and Scientific Support Dept, ESA, Noordwik, The NetherlandsUNSPECIFIEDUNSPECIFIED
Rickman, HansUppsala Astronomical ObservatoryUNSPECIFIEDUNSPECIFIED
Agarwal, JessicaMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, GermanyUNSPECIFIEDUNSPECIFIED
A'Hearn, Michael F.University of MarylandUNSPECIFIEDUNSPECIFIED
Barucci, Maria AntonettaObservatoire de Paris, Meudon, FranceUNSPECIFIEDUNSPECIFIED
Bertaux, J.–LLATMOS, CNRS/UVSQ/IPSL, 11 Boulevard dAlembert, 78280 Guyancourt, FranceUNSPECIFIEDUNSPECIFIED
Bertini, IvanoUniversita di PadovaUNSPECIFIEDUNSPECIFIED
Boudreault, SteveMax-Planck-Institut f¨ur Sonnensystemforschung, Justus-von-Liebig-Weg 3,UNSPECIFIEDUNSPECIFIED
Bütner, Irenemax planck institute for solar system research, katlenburg-lindau, germanyUNSPECIFIEDUNSPECIFIED
Cremonese, GabrieleINAF, Padova, IUNSPECIFIEDUNSPECIFIED
Deppo, Vania DaCNR-IFN UOS Padova LUXOR, via Trasea 7, 35131, Padova, ItalyUNSPECIFIEDUNSPECIFIED
Davidsson, Björnjpl, PasadenaUNSPECIFIEDUNSPECIFIED
Debei, StefanoDepartment of Industrial Engineering – University of Padova, via Venezia 1, 35131 Padova, ItalyUNSPECIFIEDUNSPECIFIED
De Cecco, MariolinoUniversity of Trento, Via Mesiano 77, 38100 Trento, ItalyUNSPECIFIEDUNSPECIFIED
Deller, JakobMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3,UNSPECIFIEDUNSPECIFIED
Fornasier, SoniaObservatoire de Paris-Meudon, FranceUNSPECIFIEDUNSPECIFIED
Groussin, OlivierLab. d'Astrophysique de Marseille, FranceUNSPECIFIEDUNSPECIFIED
Gutierrez, Pedro J.Instituto de Astrofisica de AndaluciaUNSPECIFIEDUNSPECIFIED
Gutierrez-Marques, PabloMax Planck Institute for Solar System ResearchUNSPECIFIEDUNSPECIFIED
Hall, I.Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, GermanyUNSPECIFIEDUNSPECIFIED
Hofman, MarcMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3 37077 Göttingen, GermanyUNSPECIFIEDUNSPECIFIED
Hviid, StubbeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ip, Wing-HuenNational Central University, Graduate Institute of Astronomy, 300 Chung-Da Road, Chung-Li 32054, TaiwanUNSPECIFIEDUNSPECIFIED
Jorda, LaurentLaboratoire d'Astrophysique MarseilleUNSPECIFIEDUNSPECIFIED
Knollenberg, JörgUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kovacs, GaborMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, GermanyUNSPECIFIEDUNSPECIFIED
Kramm, J.-RainerMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, Germany.UNSPECIFIEDUNSPECIFIED
Küppers, MichaelOperations Department, European Space Astronomy Centre/ESA, P.O.Box 78, 28691 Villanueva de la Canada, Madrid, SpainUNSPECIFIEDUNSPECIFIED
Lara, Luisa M.Instituto de Astrofisica de Andalucia (CSIC), c/ Glorieta de la Astronomìa s/n, 18008 Granada, SpainUNSPECIFIEDUNSPECIFIED
Lazzarin, MonicaUniversity of Padova, Department of Physics and Astronomy, Vicolo dell'Osservatorio 3, 35122 Padova, ItalyUNSPECIFIEDUNSPECIFIED
López-Moreno, J. J.Instituto de Astrofisica de Andalucia CSIC, Glorieta de la Astronomia, 18008, Granada, SpainUNSPECIFIEDUNSPECIFIED
Marzari, FrancescoUniversity of Padova, Padova, ItalyUNSPECIFIEDUNSPECIFIED
Naletto, GiampieroCentro di Ateneo di Studi ed Attivitá Spaziali, “Giuseppe Colombo” (CISAS), University of Padova, Via Venezia 15, 35131 Padova, ItalyUNSPECIFIEDUNSPECIFIED
Oklay, NildaUNSPECIFIEDhttps://orcid.org/0000-0002-4909-9692UNSPECIFIED
Richards, Michael L.max planck institute for solar system research, germanyUNSPECIFIEDUNSPECIFIED
Ripken, Joachimmax-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingen, germanyUNSPECIFIEDUNSPECIFIED
Thomas, NicolasUniversity of Bern, SwitzerlandUNSPECIFIEDUNSPECIFIED
Tubiana, CeciliaMax-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg, 3, 37077, Göttingen, GermanyUNSPECIFIEDUNSPECIFIED
Vincent, Jean-BaptisteUNSPECIFIEDhttps://orcid.org/0000-0001-6575-3079UNSPECIFIED
Date:26 June 2017
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:469
DOI:10.1093/mnras/stx1607
Page Range:pp. 295-311
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:Numerical methods, Comets, 67P/Churyumov-Gerasimenko, Refractory, Volatile
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project ROSETTA Instruments (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geodesy
Institute of Planetary Research > Asteroids and Comets
Deposited By: Wählisch, Marita
Deposited On:08 Jan 2018 10:07
Last Modified:06 Sep 2019 15:17

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