Atmosphere of Betelgeuse before and during the Great Dimming event revealed by tomography

@inproceedings{Kravchenko2021AtmosphereOB,
  title={Atmosphere of Betelgeuse before and during the Great Dimming event revealed by tomography},
  author={K. Kravchenko and A. Jorissen and S. Eck and T. Merle and A. Chiavassa and C. Paladini and B. Freytag and B. Plez and M. Montarg{\`e}s and H. Winckel},
  year={2021}
}
Context. Despite being the best studied red supergiant star in our Galaxy, the physics behind the photometric variability and mass loss of Betelgeuse is poorly understood. Moreover, recently the star has experienced an unusual fading with its visual magnitude reaching a historical minimum. The nature of this event was investigated by several studies where mechanisms, such as episodic mass loss and the presence of dark spots in the photosphere, were invoked. Aims. We aim to relate the… Expand

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