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| Titel |
Herschel Observations of Comet 103P/Hartley 2 |
| VerfasserIn |
Miguel de Val-Borro, Michael Küppers, Paul Hartogh, Jacques Crovisier, Dominique Bockelee-Morvan, Nicolas Biver, Emmanuel Jehin, Dariusz Lis, Bruce Swinyard, Bart Vandenbussche |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250054018
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| Zusammenfassung |
| Comet 103P/Hartley 2 was observed from October 20 to November 17, 2010 during
its perihelion passage with the HIFI, PACS and SPIRE instruments on the
Herschel Space Observatory within the guaranteed time key programme "Water and
related chemistry in the Solar System". 103P/Hartley 2 made a very close
approach to the Herschel satellite of 0.11-0.21 AU during these observations,
allowing for the detection of numerous H2O lines and several H2-18O lines with
the three instruments. We report our results on the outgassing and the
measurement of the D/H ratio in the comet, obtained from almost simultaneous
H2O and HDO HIFI observations. The kinematics of the outgassing and water
excitation are characterized by mapping observations. The dust thermal
emission from the coma is detected by PACS and SPIRE. The Spectral Energy
Distribution from 70 to 672 micrometers provides constraints on the dust size
distribution and dust production rate. |
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