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Paper: 3D Convection-pulsation Simulations with the HERACLES Code
Volume: 498, Numerical Modeling of Space Plasma Flows ASTRONUM-2014
Page: 71
Authors: Felix, S.; Audit, E.; Dintrans, B.
Abstract: We present 3D simulations of the coupling between surface convection and pulsations due to the κ-mechanism in classical Cepheids of the red edge of Hertzsprung-Russell diagram's instability strip. We show that 3D convection is less powerful than 2D convection and does not quench the radiative pulsations, leading to an efficient 3D κ-mechanism. Thus, the 3D instability strip is closer to the observed one than the 1D or 2D were.
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