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| Titel |
Relationship between inner coma water emissions and ice deposits in comet 67P/Churyumov-Gerasimenko |
| VerfasserIn |
Alessandra Migliorini, Gianrico Filacchione, Maria Cristina De Sanctis, Fabrizio Capaccioni, Giuseppe Piccioni, Dominique Bockelee-Morvan, Stephane Erard, Cedric Leyrat, Mauro Ciarniello, Michael Combi, Nicolas Fougere, Fred Taylor |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250127978
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| Publikation (Nr.) |
 EGU/EGU2016-7911.pdf |
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| Zusammenfassung |
| Data acquired in April 2015 with the VIRTIS spectrometer on board the Rosetta mission
provided information on the possible correlation between the H2O emission in
the inner coma and the exposed water deposits detected in the Hapi region on the
67P/Churyumov-Gerasimenko surface (Migliorini et al. submitted). Further bright spots
attributed to exposed water ice have been identified in other regions by OSIRIS at visible
wavelengths (Pommerol, et al., 2015) and confirmed in the infrared by VIRTIS-M in the
Imothep region (Filacchione et al., 2016). Furthermore, new water ice deposits have
been identified in regions located both at the equator and at southern latitudes.
These regions might be localised sources of water emissions in the inner coma
of 67P/C-G. The present investigation seeks to identify the spatial and temporal
correlations between the H2O emissions in the inner coma and the water ice rich deposits
on the surface in order to identify the mechanisms operating at the surface-coma
interface. It extends the study already carried out for a limited region located in the
comet’s neck, and identifies how the observed emissions and deposits evolve with
the heliocentric distance, as observed by VIRTIS during the Rosetta escort phase
mission. |
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