The chemistry of episodic accretion
Abstract
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.
- Publication:
-
Laboratory Astrophysics: From Observations to Interpretation
- Pub Date:
- 2020
- DOI:
- 10.1017/S1743921319009165
- Bibcode:
- 2020IAUS..350..440R
- Keywords:
-
- stars: pre-main-sequence;
- accretion;
- accretion disks;
- (stars:) circumstellar matter;
- astrochemistry;
- radiative transfer;
- methods: numerical