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The chemistry of episodic accretion


Thi,  W.-F.
Center for Astrochemical Studies at MPE, MPI for Extraterrestrial Physics, Max Planck Society;

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Rab, C., Elbakyan, V., Vorobyov, E., Postel, A., Güdel, M., Dionatos, O., et al. (2020). The chemistry of episodic accretion. Cambridge, UK: Cambridge University Press.

Cite as: http://hdl.handle.net/21.11116/0000-0008-15E0-3
Episodic accretion is an important process in the evolution of young stars and their surroundings. A consequence of an episodic accretion event is a luminosity burst, which heats the protostellar environment and has a long lasting impact on the chemical evolution of the disk and envelope of young stars. We present a new model for the chemistry of episodic accretion based on the 2D radiation thermo-chemical disk code ProDiMo. We discuss the impact of an episodic accretion burst on the chemical evolution of CO and its observables. Furthermore we present a model for the outbursting source V883 Ori where we fitted available observational data to get an accurate physical structure that allows for a detailed study of the chemistry.