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The Great Dimming of Betelgeuse from the VLT/VLTI

Published online by Cambridge University Press:  30 November 2022

M. Montargès Open the ORCID record for M. Montargès [Opens in a new window] ,
E. Cannon ,
E. Lagadec ,
A. de Koter ,
P. Kervella Open the ORCID record for P. Kervella [Opens in a new window] ,
J. Sanchez-Bermudez ,
C. Paladini Open the ORCID record for C. Paladini [Opens in a new window] ,
F. Cantalloube ,
L. Decin  and
P. Scicluna
...Show all authors
M. Montargès
Affiliation:
LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, 92195 Meudon, France email: miguel.montarges@observatoiredeparis.psl.eu
E. Cannon
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D B2401, 3001 Leuven, Belgium
E. Lagadec
Affiliation:
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, CS 34229, 06304 Nice cedex 4, France
A. de Koter
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D B2401, 3001 Leuven, Belgium Anton Pannenkoek Institute for Astronomy, University of Amsterdam, 1090 GE, Amsterdam, The Netherlands
P. Kervella
Affiliation:
LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, 92195 Meudon, France email: miguel.montarges@observatoiredeparis.psl.eu
J. Sanchez-Bermudez
Affiliation:
Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70264, Ciudad de México, 04510, México
C. Paladini
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
F. Cantalloube
Affiliation:
Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388, Marseille, France
L. Decin
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D B2401, 3001 Leuven, Belgium School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
P. Scicluna
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
K. Kravchenko
Affiliation:
Max Planck Institute for extraterrestrial Physics, Giessenbachstraße 1, D-85748 Garching, Germany
A. K. Dupree
Affiliation:
Center for Astrophysics, Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
S. Ridgway
Affiliation:
NSF’s National Optical-Infrared Astronomy Research Laboratory, PO Box 26732, Tucson, AZ 85726-6732, USA
M. Wittkowski
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748, Garching bei München, Germany
N. Anugu
Affiliation:
Steward Observatory, 933 N. Cherry Avenue, University of Arizona, Tucson, AZ, 85721, USA University of Exeter, School of Physics and Astronomy, Stocker Road, Exeter, EX4 4QL, UK
R. Norris
Affiliation:
Physics Department, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, USA
G. Rau
Affiliation:
NASA Goddard Space Flight Center, Exoplanets & Stellar Astrophysics Laboratory, Code 667, Greenbelt, MD 20771, USA Department of Physics, Catholic University of America, Washington, DC 20064, USA
G. Perrin
Affiliation:
LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, 92195 Meudon, France email: miguel.montarges@observatoiredeparis.psl.eu
A. Chiavassa
Affiliation:
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, CS 34229, 06304 Nice cedex 4, France
S. Kraus
Affiliation:
University of Exeter, School of Physics and Astronomy, Stocker Road, Exeter, EX4 4QL, UK
J. D. Monnier
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI, 48109, USA
F. Millour
Affiliation:
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, CS 34229, 06304 Nice cedex 4, France
J.-B. Le Bouquin
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI, 48109, USA Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
X. Haubois
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
B. Lopez
Affiliation:
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, CS 34229, 06304 Nice cedex 4, France
P. Stee
Affiliation:
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, CS 34229, 06304 Nice cedex 4, France
W. Danchi
Affiliation:
NASA Goddard Space Flight Center, Exoplanets & Stellar Astrophysics Laboratory, Code 667, Greenbelt, MD 20771, USA
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Abstract

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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.

Keywords

StarsStellar evolutionTime-domain astronomyTransient astrophysical phenomenaStars: individual: BetelgeusesupergiantsStars: mass-lossStars: imagingTechniques: high angular resolution.
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S366: The Origin of Outflows in Evolved Stars , November 2020 , pp. 117 - 123
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Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of International Astronomical Union

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