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Entrainment in 3D hydrodynamics simulations of neon burning

Published online by Cambridge University Press:  29 August 2024

F. Rizzuti Open the ORCID record for F. Rizzuti [Opens in a new window] ,
R. Hirschi ,
C. Georgy ,
W. D. Arnett ,
C. Meakin  and
A. StJ. Murphy
F. Rizzuti*
Affiliation:
Astrophysics Group, Lennard-Jones Laboratories, Keele University, Keele ST5 5BG, UK
R. Hirschi
Affiliation:
Astrophysics Group, Lennard-Jones Laboratories, Keele University, Keele ST5 5BG, UK Kavli IPMU (WPI), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8583, Japan
C. Georgy
Affiliation:
Geneva Observatory, Geneva University, CH-1290 Sauverny, Switzerland
W. D. Arnett
Affiliation:
Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson AZ 85721, USA
C. Meakin
Affiliation:
Pasadena Consulting Group, 1075 N Mar Vista Ave, Pasadena, CA 91104 USA
A. StJ. Murphy
Affiliation:
School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, UK
*
email: [email protected]
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Abstract

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Our knowledge of massive star evolution is limited by uncertainties linked with multi-dimensional processes taking place in stellar interiors. Important examples are convective boundary mixing (CBM) and entrainment, which are implemented in 1D stellar evolution models assuming simplified prescriptions. 3D hydrodynamics models can improve these prescriptions by studying realistic multi-D processes for a short timerange (minutes or hours). In these proceedings, we present results coming from a new set of high-resolution hydrodynamics simulations of a neon-burning shell in a massive star, and discuss how the entrainment law can be calibrated from 3D models and then used to improve 1D stellar evolution prescriptions.

Keywords

convectionhydrodynamicsturbulencestars: evolutionstars: interiorsstars: massive
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 353 - 358
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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