Grain growth and its chemical impact in the first hydrostatic core phase Article Swipe

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D. Navarro-Almaida , U. Lebreuilly , P. Hennebelle , A. Fuente , B. Commerçon , Romane Le Gal , Valentine Wakelam , Maryvonne Gérin , P. Riviére-Marichalar , Leire Beitia-Antero , Y. Ascasíbar ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2403.01905

The first hydrostatic core (FHSC) phase is a brief stage in the protostellar evolution that is difficult to detect. Our goal is to characterize the chemical evolution of gas and dust during the formation of the FHSC. Moreover, we are interested in analyzing, for the first time with 3D magnetohydrodynamic (MHD) simulations, the role of grain growth in its chemistry. We postprocessed $2\times10^{5}$ tracer particles from a $\texttt{RAMSES}$ non-ideal MHD simulation using the codes $\texttt{NAUTILUS}$ and $\texttt{SHARK}$ to follow the chemistry and grain growth throughout the simulation. A great chemical inheritance is seen, as gas-phase abundances of most of the C, O, N, and S reservoirs in the hot corino at the end of the simulation match the ice-phase abundances from the prestellar phase. Additionally, interstellar complex organic molecules (iCOMs) such as methyl formate, acetaldehyde, and formamide are formed during the warm-up process. The typical grain size in the hot corino $(n_{\rm H}>10^{11}\ {\rm cm^{-3}})$ increases forty-fold during the last 30 kyr, with negligible effects on its chemical composition. At moderate densities $(10^{10}

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Hydrostatic Equilibrium

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Core (optical fiber) Hydrostatic equilibrium Grain growth Phase (matter) Materials science Hydrostatic pressure Grain size Chemistry Metallurgy Composite material Thermodynamics Physics Quantum mechanics Organic chemistry

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2403.01905
PDF: https://arxiv.org/pdf/2403.01905
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OpenAlex ID: https://openalex.org/W4392488802

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DOI: https://doi.org/10.48550/arxiv.2403.01905

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Title: Grain growth and its chemical impact in the first hydrostatic core phase

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Language: en

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Publication year: 2024

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Publication date: 2024-03-04

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Authors: D. Navarro-Almaida, U. Lebreuilly, P. Hennebelle, A. Fuente, B. Commerçon, Romane Le Gal, Valentine Wakelam, Maryvonne Gérin, P. Riviére-Marichalar, Leire Beitia-Antero, Y. Ascasíbar

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Landing page: https://arxiv.org/abs/2403.01905

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Concepts: Core (optical fiber), Hydrostatic equilibrium, Grain growth, Phase (matter), Materials science, Hydrostatic pressure, Grain size, Chemistry, Metallurgy, Composite material, Thermodynamics, Physics, Quantum mechanics, Organic chemistry

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