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Chemical modeling of FU Ori protoplanetary disks

Published online by Cambridge University Press:  13 January 2020

Tamara Molyarova Open the ORCID record for Tamara Molyarova [Opens in a new window] ,
Vitaly Akimkin Open the ORCID record for Vitaly Akimkin [Opens in a new window] ,
Dmitry Semenov ,
Péter Ábrahám ,
Thomas Henning ,
Ágnes Kóspál ,
Eduard Vorobyov  and
Dmitri Wiebe
Tamara Molyarova
Affiliation:
Institute of Astronomy, Russian Academy of Sciences, 119017, 48 Pyatnitskaya st., Moscow, Russia email: molyarova@inasan.ru
Vitaly Akimkin
Affiliation:
Institute of Astronomy, Russian Academy of Sciences, 119017, 48 Pyatnitskaya st., Moscow, Russia email: molyarova@inasan.ru
Dmitry Semenov
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
Péter Ábrahám
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
Thomas Henning
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
Ágnes Kóspál
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
Eduard Vorobyov
Affiliation:
Research Institute of Physics, Southern Federal University, Stachki 194, Rostov-on-Don, 344090, Russia
Dmitri Wiebe
Affiliation:
Institute of Astronomy, Russian Academy of Sciences, 119017, 48 Pyatnitskaya st., Moscow, Russia email: molyarova@inasan.ru
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Abstract

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Luminosity outbursts of the FU Ori type stars, which have a magnitude of ∼ 100 L⊙ and last for decades, may affect chemical composition of the surrounding protoplanetary disk. Using astrochemical modelling we analyse the changes induced by the outburst and search for species sensitive to the luminosity rise. Some changes in the disk molecular composition appear not only during the outburst itself but can also retain for decades after the end of the outburst. We analyse main chemical processes responsible for these effects and assess timescales at which chemically inert species return to the pre-outburst abundances.

Keywords

astrochemistryplanetary systems: protoplanetary disksstars: pre–main-sequence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 367 - 368
Copyright
© International Astronomical Union 2020 

References

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