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• W4382048093 endingPage "A52" @default.
• W4382048093 startingPage "A52" @default.
• W4382048093 abstract "We introduce ECCOplanets, an open-source Python code that simulates condensation in the protoplanetary disk. Our aim is to analyse how well a simplistic model can reproduce the main characteristics of rocky planet formation. For this purpose, we revisited condensation temperatures ($T_c$) as a means to study disk chemistry, and explored their sensitivity to variations in pressure (p) and elemental abundance pattern. We also examined the bulk compositions of rocky planets around chemically diverse stars. Our T-p-dependent chemical equilibrium model is based on a Gibbs free energy minimisation. We derived condensation temperatures for Solar System parameters with a simulation limited to the most common chemical species. We assessed their change ($Delta T_c$) as a result of p-variation between $10^{-6}$ and 0.1 bar. To analyse the influence of the abundance pattern, key element ratios were varied, and the results were validated using solar neighbourhood stars. To derive the bulk compositions of planets, we explored three different planetary feeding-zone (FZ) models and compared their output to an external n-body simulation. Our model reproduces the external results well in all tests. For common planet-building elements, we derive a Tc that is within $pm5$ K of literature values, taking a wider spectrum of components into account. The Tc is sensitive to variations in p and the abundance pattern. For most elements, it rises with p and metallicity. The tested pressure range ($10^{-6} - 0.1$ bar) corresponds to $Delta T_c approx +350$ K, and for -0.3 $leq$ [M/H] $leq$ 0.4 we find $Delta T_c approx +100$ K. An increase in C/O from 0.1 to 0.7 results in a decrease of $Delta T_c approx -100$ K. Other element ratios are less influential. Dynamic planetary accretion can be emulated well with any FZ model. Their width can be adapted to reproduce gradual changes in planetary composition." @default.
• W4382048093 created "2023-06-27" @default.
• W4382048093 creator A5003134253 @default.
• W4382048093 creator A5014800301 @default.
• W4382048093 creator A5067853638 @default.
• W4382048093 creator A5069866445 @default.
• W4382048093 date "2023-08-01" @default.
• W4382048093 modified "2023-09-23" @default.
• W4382048093 title "Revisiting equilibrium condensation and rocky planet compositions. Introducing the ECCOplanets code" @default.
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