FORMISANO, MichelangeloMichelangeloFORMISANODE SANCTIS, MARIA CRISTINAMARIA CRISTINADE SANCTISCAPACCIONI, FABRIZIOFABRIZIOCAPACCIONIMagni, G.G.MagniMottola, S.S.MottolaCAPRIA, MARIA TERESAMARIA TERESACAPRIAAmmannito, E.E.AmmannitoBockelee-Morvan, D.D.Bockelee-Morvan2020-05-222020-05-222015http://hdl.handle.net/20.500.12386/25111In this work we study the water vapor emission by the the comet 67P/CG, the target of Rosetta mission. In this work we investigate the physical conditions required to generate short-lived outbursts in cometary nuclei. We applied a thermo-physical model [1, 2, 3] in order to evaluate the temperature of surface and subsurface layers and the water flux. Cyclic sublimation and water condensation in the sub-surface layers, due to the change of the illumination condition on the surface, is a likely mechanism to explain part of the water outgassing [5].ELETTRONICOenConference abstracthttps://www.epsc2015.eu/2015EPSC...10..501FFIS/05 - ASTRONOMIA E ASTROFISICA