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Long-Term Evolution of Convectively Unstable Disk

Published online by Cambridge University Press:  20 January 2023

Lomara Maksimova Open the ORCID record for Lomara Maksimova [Opens in a new window]  and
Yaroslav Pavlyuchenkov
Lomara Maksimova*
Affiliation:
Institute of Astronomy, Russian Academy of Sciences Pyatnitskaya str., 48, Moscow 119017
Yaroslav Pavlyuchenkov
Affiliation:
Institute of Astronomy, Russian Academy of Sciences Pyatnitskaya str., 48, Moscow 119017
*
*email: [email protected]
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Abstract

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We continue studying convection as a possible factor of episodic accretion in protoplanetary disks. Within the model of a viscous disk, the accretion history is analyzed at different rates and regions of matter inflow from the envelope onto the disk. It is shown that the burst-like regime occurs in a wide range of parameters. The long-term evolution of the disk is modeled, including the decreasing-with-time matter inflow from the envelope. It is demonstrated that the disk becomes convectively unstable and maintains burst-like accretion onto the star for several million years. The general conclusion of the study is that convection can serve as one of the mechanisms of episodic accretion in protostellar disks, but this conclusion needs to be verified using more consistent hydrodynamic models.

Keywords

protoplanetary disknumerical modelconvective instabilityviscous disk
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S362: The Predictive Power of Computational Astrophysics as a Discovery Tool , June 2020 , pp. 306 - 308
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

References

Pringle, J. E. 1981, Annu. Rev. Astron. Astrophys., 19, 117 CrossRefGoogle Scholar
Pavlyuchenkov, Ya. N., Tutukov, A. V., Maksimova, L. A., Vorobyov, E. I. 2020, Astron. Rep., 64, 1Google Scholar
Maksimova, L. A., Pavlyuchenkov, Ya. N., Tutukov, A. V. 2020, Astron. Rep., 64, 10Google Scholar