Effect of Rotation on Wave Mixing in Intermediate Mass Stars

• Published in: arXiv.org
• Main Authors: Varghese, A, Ratnasingam, R P, Vanon, R, Edelmann, P V F, Mathis, S, Rogers, T M
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 06.06.2024
• Subjects: Gravity waves; Physics - High Energy Astrophysical Phenomena; Physics - Solar and Stellar Astrophysics; Rotation; Stellar interiors
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2406.04403

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 (\(1\times 10^{-5}\), \(2\times 10^{-5}\), \(3\times 10^{-5}\), \(4\times 10^{-5}\) and \(1\times 10^{-4}\) 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.