ETD

Archivio digitale delle tesi discusse presso l'Università di Pisa

Tesi etd-11062017-155815


Tipo di tesi
Tesi di laurea magistrale
Autore
CILIBRASI, MARCO
URN
etd-11062017-155815
Titolo
A semi-analytical model for the formation of Jupiter's satellites in circumplanetary disks
Dipartimento
FISICA
Corso di studi
FISICA
Relatori
relatore Prof. Mayer, Lucio
correlatore Dott.ssa Szulágyi, Judit
correlatore Prof. Paolicchi, Paolo
Parole chiave
  • satellite formation
  • circumplanetary disk
  • semi-analytical model
  • population synthesis
Data inizio appello
11/12/2017
Consultabilità
Completa
Riassunto
A better understanding of satellite formation processes in a circumplanetary disk (CPD) can bring us closer to a
more comprehensive knowledge of the last phases of giant planet formation. This can be accomplished comparing the results of theoretical models for satellite formation to the observed population of giant or icy planets' satellites in the Solar System.
In order to do that I developed a semi-analytical model for satellites formation, putting together analytical prescriptions for embryos formation, accretion and migration in a disk, considering the same physical mechanisms of planet formation in a protoplanetary disk (PPD). I adopted the structure of CPDs from 3D radiative simulations results of a Jupiter-like planet formed in the Core Accretion scenario and I performed a populations synthesis with thousands of simulated systems.
I found that many generations of satellites should form in a CPD and only a last generation survives. This last generation could form very late in the evolution of the giant planet, when the disk has already lost more than the 99% of its mass, and also very fast, with timescales possibly down to 1000 years. We also found that the distribution of survived satellites' masses is peaked slightly above Galilean masses, then up to Earth-sizes satellites could form around a Jupiter-like planet, and that those satellites could form in a relatively cold environment, making the presence of condensed volatiles in their composition quite likely.
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