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Three-dimensional imaging of convective cells in the photosphere of Betelgeuse

Three-dimensional imaging of convective cells in the photosphere of Betelgeuse

Aims. Understanding convection in red supergiants and the mechanisms that trigger the mass loss from these evolved stars are the general goals of most observations of Betelgeuse and its inner circumstellar environment. Methods. Linear spectropolarimetry of the atomic lines of the spectrum of Betelgeuse reveals information about the three-dimensional (3D) …