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Effect of Rotation on Wave Mixing in Intermediate-mass Stars

Lookup NU author(s): Dr Ashlin Varghese, Rathish Ratnasingam, Professor Tamara Rogers

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

© 2024. The Author(s). Published by the American Astronomical Society.Internal gravity waves are likely to cause mixing in stellar interiors. Studies show that the mixing by these waves changes drastically across age and mass. Here, we study the effect of rotation on this wave mixing by considering a 7 M ⊙ model at zero-age main sequence and mid-main sequence. We compare the mixing profiles at a range of rotation rates (1 × 10−5, 2 × 10−5, 3 × 10−5, 4 × 10−5, and 1 × 10−4 rad s−1) and observe that the mixing decreases with decreasing Rossby number. This can be attributed to the effect of rotation on convection, which influences the amplitude with which the waves are excited near the convective-radiative interface.

Publication metadata

Author(s): Varghese A, Ratnasingam RP, Vanon R, Edelmann PVF, Mathis S, Rogers TM

Publication type: Article

Publication status: Published

Journal: Astrophysical Journal

Year: 2024

Volume: 970

Issue: 2

Print publication date: 01/08/2024

Online publication date: 23/07/2024

Acceptance date: 04/06/2024

Date deposited: 05/08/2024

ISSN (print): 0004-637X

ISSN (electronic): 1538-4357

Publisher: Institute of Physics

URL: https://doi.org/10.3847/1538-4357/ad54b5

DOI: 10.3847/1538-4357/ad54b5

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