3:55 PM - 4:20 PM
[SIT18-08] Metallic core and interior evolution of icy bodies
Keywords:Icy bodies, interior, evolution, core, magnetic field
However, formation of the metallic core in Ganymede (and icy bodies if they have) not seems to be obvious in terms of its initial thermal state just after the end of accretion which mainly controlled by a body size. It is thought that Ganymede’s radius, about 350 km smaller than Mars, is not sufficient to differentiate a metallic component from a silicate and to form the core. Furthermore, numerical models for the thermal history suggests that Ganymede’s metallic core formation and generating magnetic field could be started at a later stage in its history. Here we summarize current understandings of the interiors including metallic core in the icy bodies and possible scenario for their evolution, and present future perspectives to investigate further the origin and evolution using theoretical models and spacecraft explorations.