English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Recent observations started revealing the compositions of protostellar discsand planets beyond the Solar System. In this paper, we explore how thecompositions of terrestrial planets are affected by dynamical evolution ofgiant planets. We estimate the initial compositions of building blocks of theserocky planets by using a simple condensation model, and numerically study thecompositions of planets formed in a few different formation models of the SolarSystem. We find that the abundances of refractory and moderately volatileelements are nearly independent of formation models, and that all the modelscould reproduce the abundances of these elements of the Earth. The abundancesof atmophile elements, on the other hand, depend on the scattering rate of icyplanetesimals into the inner disc as well as the mixing rate of the innerplanetesimal disc. For the classical formation model, neither of thesemechanisms are efficient and the accretion of atmophile elements during thefinal assembly of terrestrial planets appears to be difficult. For the GrandTack model, both of these mechanisms are efficient, which leads to a relativelyuniform accretion of atmophile elements in the inner disc. It is also possibleto have a "hybrid" scenario where the mixing is not very efficient but thescattering is efficient. The abundances of atmophile elements in this caseincreases with orbital radii. Such a scenario may occur in some of theextrasolar planetary systems which are not accompanied by giant planets orthose without strong perturbations from giants. We also confirm that the GrandTack scenario leads to the distribution of asteroid analogues where rockyplanetesimals tend to exist interior to icy ones, and show that their overallcompositions are consistent with S-type and C-type chondrites, respectively.

Effects of Dynamical Evolution of Giant Planets on the Delivery of Atmophile Elements During Terrestrial Planet Formation