English

Effect of Rotation on Wave Mixing in Intermediate Mass Stars

Solar and Stellar Astrophysics 2024-07-26 v1 High Energy Astrophysical Phenomena

Abstract

Internal gravity waves (IGWs) are likely to cause mixing in stellar interiors. Studies show that the mixing by these waves changes drastically across age and mass (Varghese et al. 2023, arXiv:2211.06432). Here, we study the effect of rotation on this wave mixing by considering a 7 M_{\odot} model at ZAMS and midMS. We compare the mixing profiles at a range of rotation rates (1×1051\times 10^{-5}, 2×1052\times 10^{-5}, 3×1053\times 10^{-5}, 4×1054\times 10^{-5} and 1×1041\times 10^{-4} rad.s1^{-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.

Keywords

Cite

@article{arxiv.2406.04403,
  title  = {Effect of Rotation on Wave Mixing in Intermediate Mass Stars},
  author = {A. Varghese and R. P. Ratnasingam and R. Vanon and P. V. F. Edelmann and S. Mathis and T. M. Rogers},
  journal= {arXiv preprint arXiv:2406.04403},
  year   = {2024}
}

Comments

13 pages, 8 figures, accepted at ApJ