Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-13T05:32:12.221Z Has data issue: false hasContentIssue false
  • English
  • Français

The chemistry of episodic accretion

Published online by Cambridge University Press:  12 October 2020

C. Rab Open the ORCID record for C. Rab [Opens in a new window] ,
V. Elbakyan ,
E. Vorobyov ,
A. Postel ,
M. Güdel ,
O. Dionatos Open the ORCID record for O. Dionatos [Opens in a new window] ,
M. Audard ,
I. Kamp Open the ORCID record for I. Kamp [Opens in a new window] ,
W.-F. Thi  and
P. Woitke
C. Rab
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700 AV Groningen, the Netherlands email: rab@astro.rug.nl
V. Elbakyan
Affiliation:
Research Inst. of Physics, Southern Federal Uni., Stachki 194, Rostov-on-Don 344090, Russia
E. Vorobyov
Affiliation:
Research Inst. of Physics, Southern Federal Uni., Stachki 194, Rostov-on-Don 344090, Russia University of Vienna, Dept. of Astrophysics, Türkenschanzstr. 17, 1180 Wien, Austria
A. Postel
Affiliation:
Department of Astronomy, University of Geneva, Ch. d’Ecogia 16, 1290 Versoix, Switzerland
M. Güdel
Affiliation:
University of Vienna, Dept. of Astrophysics, Türkenschanzstr. 17, 1180 Wien, Austria
O. Dionatos
Affiliation:
University of Vienna, Dept. of Astrophysics, Türkenschanzstr. 17, 1180 Wien, Austria
M. Audard
Affiliation:
Department of Astronomy, University of Geneva, Ch. d’Ecogia 16, 1290 Versoix, Switzerland
I. Kamp
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700 AV Groningen, the Netherlands email: rab@astro.rug.nl
W.-F. Thi
Affiliation:
MPE, Giessenbachstrasse 1, 85748 Garching, Germany
P. Woitke
Affiliation:
SUPA, School of Physics & Astronomy, University of St. Andrews, St. Andrews KY16 9SS, UK
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

stars: pre–main-sequenceaccretionaccretion disks(stars:) circumstellar matterastrochemistryradiative transfermethods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S350: Laboratory Astrophysics: From Observations to Interpretation , April 2019 , pp. 440 - 442
Copyright
© International Astronomical Union 2020

References

Audard, M., Ábrahám, P., Dunham, M. M. et al. 2014, Protostars and Planets VI, 387Google Scholar
Cieza, L. A., Casassus, S., Tobin, J. et al. 2016, Nature, 535, 258Google Scholar
Kim, H. J., Evans, N. J. II, Dunham, M. M. et al. 2012, ApJ, 758, 38 Google Scholar
Lee, J.-E., Lee, S., Baek, G. et al. 2019, Nature Astron., 200Google Scholar
Postel, A., Audard, M., Vorobyov, E. et al. 2019, A&A, 631, A30 Google Scholar
Rab, C., Elbakyan, V., Vorobyov, E. et al. 2017, A&A, 604, A15 Google Scholar
van ’t Hoff, M. L. R., Tobin, J. J., Trapman, L. 2018, ApJ, 864, L23 10.3847/2041-8213/aadb8aCrossRefGoogle Scholar
Visser, R., Bergin, E. A., & Jørgensen, J. K. 2015, A&A, 577, A102 Google Scholar
Vorobyov, E. I., Baraffe, I., Harries, T. et al. 2013, A&A, 557, A35 Google Scholar
White, J. A., Kóspál, Á., Rab, C. et al. 2019, ApJ, 877, 21 10.3847/1538-4357/ab18fcCrossRefGoogle Scholar
Woitke, P., Kamp, I., & Thi, W.-F. 2009, A&A, 501, 383 Google Scholar
Zhu, Z., Hartmann, L.; Calvet, N. et al. 2007, ApJ, 669, 483 10.1086/521345CrossRefGoogle Scholar