The chemical composition of terrestrial planets from coupled N-body and condensation calculations

MARIA PAULA RONCO; AMAURY THIABAUD; ULYSSE MARBOEUF; YANN ALIBERT; GONZALO CARLOS DE ELÍA; OCTAVIO MIGUEL GUILERA

Berna

Congreso; Pathways Towards Habitable Planets; 2015

University of Bern, Center of Space and Habitability

Planet formation models usually focus on the accretion and dynamical processes of planets, neglecting their chemicalcomposition. We incorporate the condensation sequence of different chemical elements, volatiles and refractory species,in our semi-analytical model of planet formation. We apply our model to calculate the formation of a planetary systemduring its gaseous phase. The results, distributions of embryos and planetesimals, are used as initial conditions for N-bodysimulations that compute the formation of terrestrial planets. Our results show that, for a low-mass protoplanetary diskaround a solar-type star, the chemical composition of the planets that remain in the habitable zone has similar characteristicsto that of the Earth.