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  Addressing the acoustic tachocline anomaly and the lithium depletionproblem at the same time

Jørgensen, A. C. S., & Weiss, A. (2018). Addressing the acoustic tachocline anomaly and the lithium depletionproblem at the same time. Monthly Notices of the Royal Astronomical Society, 481(4), 4389-4396. doi:doi:10.1093/mnras/sty2590.

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Addressing the acoustic tachocline anomaly and the lithium depletionproblem at the same time.pdf (Any fulltext), 498KB
 
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Jørgensen, Andreas C. S.1, Author              
Weiss, Achim1, Author              
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1Stellar Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159882              

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 Abstract: Current standard solar models neither account properly for the photospheric lithium abundance nor reproduce the inferred solar sound speed profile. Diffusive overshooting at the base of the solar convective envelope has previously been shown to solve either of these model inadequacies. In this paper, we present an analysis of solar models with four different parametrizations of diffusive overshooting. We find that these models are able to recover the correct lithium depletion, regardless of the parametrization, if overshooting is suppressed, during the early evolutionary stages. Further, parametrizations of diffusive overshooting have been shown to improve the inferred sound speed profile. However, none of the presented models are able to simultaneously solve both model inadequacies, showing that diffusive overshooting on its own is deficient to account for observations.

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 Dates: 2018-09-20
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: doi:10.1093/mnras/sty2590
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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 481 (4) Sequence Number: - Start / End Page: 4389 - 4396 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150