JOURNAL ARTICLE

Observational and Chemical Modelling of Protoplanetary Disks after FU Ori outbursts.

  • Published In: Proceedings of the International Astronomical Union, 2024, v. 20, n. S393. P. 126 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Zwicky, Lis; Molyarova, Tamara; Akimkin, Vitaly; Semenov, Dmitry; Kóspál, Ágnes; Ábrahám, Péter 3 of 3

Abstract

FU Ori stars (FUors) are undergoing powerful luminosity outbursts of ∼100 L ⊙ in magnitude and of several decades in duration. Such outbursts inevitably affect physical and chemical structure of the surrounding protoplanetary disk. Using astrochemical and radiative transfer modelling, we study the lasting impact of the outburst on disks with and without an envelope and how it changes flux in chosen molecular lines. We formulate a number of criteria indicative of a recent outburst activity based on the molecular emission, analyze the chemistry behind the flux change and apply the criteria to available observations of quiescent protoplanetary disks. The latter revealed ten objects with possible outbursts in the past and four of them satisfy multiple proposed criteria. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:Proceedings of the International Astronomical Union. 2024/12, Vol. 20, Issue S393, p126
  • Document Type:Conference Paper/Materials
  • Subject Area:Chemistry
  • Publication Date:2024
  • ISSN:1743-9213
  • DOI:10.1017/S1743921324002606
  • Accession Number:190772434
  • Copyright Statement:Copyright of Proceedings of the International Astronomical Union is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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