The chemistry of episodic accretion

C. Rab*, V. Elbakyan, E. Vorobyov, A. Postel, M. Güdel, O. Dionatos, M. Audard, I. Kamp, W. F. Thi, P. Woitke

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationLaboratory Astrophysics
Subtitle of host publicationFrom Observations to Interpretation
PublisherInternational Astronomical Union (IAU)
Number of pages3
Publication statusPublished - 12 Oct 2020
EventIAU Symposium 350 - Cambridge, United Kingdom
Duration: 14 Apr 201919 Apr 2019
Conference number: 350

Publication series

NameProceedings of the International Astronomical Union
PublisherCambridge University Press
ISSN (Print)1743-9213


ConferenceIAU Symposium 350
Country/TerritoryUnited Kingdom
Internet address


  • Stars: circumstellar matter
  • Accretion
  • Accretion disks
  • Astrochemistry
  • Methods: Numerical
  • Radiative transfer
  • Stars: Pre-main-sequence


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