Evolution of water production of 67P/Churyumov-Gerasimenko

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Hansen, Kenneth C.
dc.contributor.author Altwegg, K.
dc.contributor.author Berthelier, J. -J.
dc.contributor.author Bieler, A.
dc.contributor.author Biver, N.
dc.contributor.author Bockelee-Morvan, D.
dc.contributor.author Calmonte, U.
dc.contributor.author Capaccioni, F.
dc.contributor.author Combi, M. R.
dc.contributor.author De Keyser, J.
dc.contributor.author Fiethe, B.
dc.contributor.author Fougere, N.
dc.contributor.author Fuselier, S. A.
dc.contributor.author Gasc, S.
dc.contributor.author Gombosi, T. I.
dc.contributor.author Huang, Z.
dc.contributor.author Le Roy, L.
dc.contributor.author Lee, S.
dc.contributor.author Nilsson, H.
dc.contributor.author Rubin, Martin
dc.contributor.author Shou, Y.
dc.contributor.author Snodgrass, C.
dc.contributor.author Tenishev, V.
dc.contributor.author Tzou, C.-Y.
dc.contributor.author Wedlund, C. Simon
dc.contributor.author Toth, Gabor
dc.contributor.author , ROSINA Team
dc.date.accessioned 2017-10-15T20:38:35Z
dc.date.available 2017-10-15T20:38:35Z
dc.date.issued 2016-11
dc.identifier.citation Hansen , K C , Altwegg , K , Berthelier , J -J , Bieler , A , Biver , N , Bockelee-Morvan , D , Calmonte , U , Capaccioni , F , Combi , M R , De Keyser , J , Fiethe , B , Fougere , N , Fuselier , S A , Gasc , S , Gombosi , T I , Huang , Z , Le Roy , L , Lee , S , Nilsson , H , Rubin , M , Shou , Y , Snodgrass , C , Tenishev , V , Toth , G , Tzou , C-Y , Wedlund , C S & ROSINA Team 2016 , ' Evolution of water production of 67P/Churyumov-Gerasimenko : an empirical model and a multi-instrument study ' MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY , vol 462 , pp. S491-S506 . DOI: 10.1093/mnras/stw2413 en
dc.identifier.issn 0035-8711
dc.identifier.issn 1365-2966
dc.identifier.other PURE UUID: 57df66f8-b640-47fa-88a2-405078543af9
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/evolution-of-water-production-of-67pchuryumovgerasimenko(57df66f8-b640-47fa-88a2-405078543af9).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/14490447/stw2413.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/28193
dc.description.abstract We examine the evolution of the water production of comet 67P/Churyumov-Gerasimenko during the Rosetta mission (2014 June-2016 May) based on in situ and remote sensing measurements made by Rosetta instruments, Earth-based telescopes and through the development of an empirical coma model. The derivation of the empirical model is described and the model is then applied to detrend spacecraft position effects from the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) data. The inter-comparison of the instrument data sets shows a high level of consistency and provides insights into the water and dust production. We examine different phases of the orbit, including the early mission (beyond 3.5 au) where the ROSINA water production does not show the expected increase with decreasing heliocentric distance. A second important phase is the period around the inbound equinox, where the peak water production makes a dramatic transition from northern to southern latitudes. During this transition, the waterdistribution is complex, but is driven by rotation and active areas in the north and south. Finally, we consider the perihelion period, where there may be evidence of time dependence in the water production rate. The peak water production, as measured by ROSINA, occurs 18-22 d after perihelion at 3.5 +/- 0.5 x 10(28) water molecules s(-1). We show that the water production is highly correlated with ground-based dust measurements, possibly indicating that several dust parameters are constant during the observed period. Using estimates of the dust/gas ratio, we use our measured water production rate to calculate a uniform surface loss of 2-4 m during the current perihelion passage. en
dc.format.extent 16
dc.format.extent S491-S506
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Volume 462 en
dc.rights openAccess en
dc.subject.other 115 Astronomy and space science en
dc.title Evolution of water production of 67P/Churyumov-Gerasimenko en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department University of Michigan, Ann Arbor
dc.contributor.department University of Bern
dc.contributor.department Observatoire de Paris
dc.contributor.department INAF IASF Milano, Istituto Nazionale Astrofisica - Italy
dc.contributor.department Royal Belgian Institute for Space Aeronomy
dc.contributor.department TU Braunschweig
dc.contributor.department University of Texas at San Antonio
dc.contributor.department Jet Propulsion Laboratory, California Institute of Technology
dc.contributor.department Swedish Institute of Space Physics
dc.contributor.department Open University
dc.contributor.department Department of Radio Science and Engineering
dc.subject.keyword methods: miscellaneous
dc.subject.keyword comets: general
dc.subject.keyword comets: individual: 67P/CG
dc.subject.keyword ROSETTA ORBITER
dc.subject.keyword HALE-BOPP
dc.subject.keyword ROSINA
dc.subject.keyword DUST
dc.subject.keyword CO2
dc.subject.keyword PREPERIHELION
dc.subject.keyword SIMULATION
dc.subject.keyword PERIHELION
dc.subject.keyword ATMOSPHERE
dc.subject.keyword 115 Astronomy and space science
dc.identifier.urn URN:NBN:fi:aalto-201710157053
dc.identifier.doi 10.1093/mnras/stw2413
dc.type.version publishedVersion

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