Présidents de session
The Rosetta Mission
- Björn Davidsson
The Rosetta Mission
- Björn Davidsson
The Rosetta Mission
- Antonella Barucci
The Rosetta Mission: The Rosetta Mission
- Antonella Barucci
Holger Sierks
(Max planck Institute, Gottingen, Germany)
19/05/2016 10:00
The Rosetta mission
Talk
Comets with their coma and tail are a spectacular sight on the night sky; they are important objects to understand the origin of our solar system. Comets are pristine and thus carry information on how they initially formed 4.5 billion years ago. 67P/Churyumov-Gerasimenko is the first comet studied in detail with a spacecraft in its vicinity for more than two years along the orbit around the...
Prof.
Dominique Bockelée-Morvan
(LESIA)
19/05/2016 11:15
The Rosetta mission
Talk
Cometary activity involves complex processes, which are related to the thermal history of the comet nucleus and evolutionary effects, and depend on the nature and properties of surface and subsuface material. Whereas ground-based observations provided insights on the volatiles responsible for cometary activity and showed evidence for non-uniform activity and seasonnal effects, a thorough...
Fabrizio Capaccioni
(IAPS-INAF)
19/05/2016 12:00
The Rosetta mission
Talk
The paper will describe the major results obtained so far by the Visible, Infrared and Thermal Imaging Spectrometer (VIRTIS), the dual channel spectrometer onboard Rosetta, on the surface composition and physical properties of the nucleus of comet 67P/Churyumov-Gerasimenko and the implications on the origin and evolution of the nucleus.
These results were achieved studying the reflected and...
Dr
Cécile Engrand
(C.S.N.S.M.)
19/05/2016 14:15
The Rosetta mission
Talk
The composition of cometary dust has been measured by in situ and remote sensing instruments in the last decades, each analysis adding pieces to the puzzle of how and where comets formed. Giotto analyses of comet 1P/Halley dust particles have shown the presence of CHON and mixed particles. Astronomical observations showed that olivine and pyroxene are present in comets. Laboratory analyses of...
Dr
Elena Lega
(OCA)
19/05/2016 16:15
The Rosetta mission
Talk
On the basis of backward numerical integrations of a large set of simulated comets whose initial conditions were obtained from small variations of the orbital parameters of comet 67P, and using the analysis of suitable chaos indicators, we detect the phase--space structure of the past close encounters of the comet with Jupiter. On the basis of these computations we find that the probability...
