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Article Dans Une Revue Proceedings of the International Astronomical Union Année : 2022

The Great Dimming of Betelgeuse from the VLT/VLTI

Résumé

From November 2019 to April 2020, the prototypical red supergiant Betelgeuse experienced an unexpected and historic dimming. This event was observed worldwide by astrophysicists, and also by the general public with the naked eye. We present here the results of our observing campaign with ESO's VLT and VLTI in the visible and infrared domains. The observations with VLT/SPHERE-ZIMPOL, VLT/SPHERE-IRDIS, VLTI/GRAVITY and VLTI/MATISSE provide spatially resolved diagnostics of this event. Using PHOENIX atmosphere models and RADMC3D dust radiative transfer simulations, we built a consistent model reproducing the images and the photometry.
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Dates et versions

hal-03948289 , version 1 (20-01-2023)

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M. Montargès, E. Cannon, E. Lagadec, A. de Koter, P. Kervella, et al.. The Great Dimming of Betelgeuse from the VLT/VLTI. Proceedings of the International Astronomical Union, 2022, 366, pp.117-123. ⟨10.1017/S1743921322000667⟩. ⟨hal-03948289⟩
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