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Linking planetary embryo formation to planetesimal formation II: The impact of pebble accretion in the terrestrial planet zone by Voelkel, Oliver; Deienno, Rogerio; Kretke, Katherine; Klahr, Hubert is a scholarly article available to read on EtoBox.

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The accretion of pebbles on planetary cores has been widely studied in recent years and is found to be a highly effective mechanism for planetary growth. While most studies assume planetary cores as an initial condition in their simulation, the question how, where and when these cores form is often neglected. We study the impact of pebble accretion during the formation phase and subsequent evolution of planetary embryos in the early stages of circumstellar disk evolution. In doing so we aim to quantify the timescales and local dependency of planetary embryo formation, based on the solid evolution of the disk. We connect a one dimensional two population model for solid evolution and pebble flux regulated planetesimal formation to the N-body code LIPAD. In our study we focus on the growth of planetesimals with an initial size of 100 km in diameter by planetesimal collisions and pebble accretion for the first 1 million years of a viscously evolving disk. We compare 18 different N-body simulations in which we vary the total planetesimal mass after 1 million years, the surface density profile of the planetesimal disk, the radial pebble flux and the possibility of pebble accretion. Pebbl

Author

Voelkel, Oliver; Deienno, Rogerio; Kretke, Katherine; Klahr, Hubert

Published

2020

Language

EN