Molecular abundances and nucleation in protostellar envelopes

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Abundance, Interstellar Matter, Nucleation, Protostars, Stellar Envelopes, Carbon, Gas Dissociation, Hydrogen, Iron, Magnesium, Oxygen

Scientific paper

The molecular structure of a massive protostellar envelope is studied using the model developed by Larson (1972). Molecular and atomic abundances are obtained on the basis of the dissociation equilibrium theory. The time-independent homogeneous nucleation theory is applied to estimate the nucleation rate using molecules as the starting point for the grain condensation process.

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