Special Session SS22  28 June 2021

The Great Dimming of Betelgeuse: news from the mass loss of red supergiants

7 September 2021 : The proceedings are available on Zenodo
28 June 2021 : Special Session on Betelgeuse at the EAS !
2 March 2021: Abstract submission deadline
18 January 2021: Opening of Registration & Abstract submission
15 January 2021: Invited speakers announced, poster available

Aims and scope

In Winter 2019-2020, the nearby red supergiant star Betelgeuse experienced an historic dimming, catching attention all over the world for an impending supernova. Since then several scenarios have been put forward in the literature, however no consensus has been so far reached. The aim of this special session is to stimulate discussions among the different teams studying the Great Dimming. The discussion will be framed in the broader context of the mass loss of red supergiant stars and how it affects their ultimate fate: the supernova explosion, and their destiny as neutron stars or black holes.


  • Variability of red supergiant stars, observations and theory
  • The Great Dimming of Betelgeuse
  • Consequences on mass loss and evolution studies

Invited speakers

  • Jacco van Loon (Lennard-Jones Laboratories, Keel University)
  • Sylvia Ekström (Department of Astronomy, University of Geneva)

Scientific organisers

  • Miguel Montargès (chair, LESIA, Observatoire de Paris - PSL, France)
  • Leen Decin (KU Leuven, Belgium)
  • Fabrice Herpin (Laboratoire d'Astrophysique de Bordeaux, France)
  • Eric Lagadec (Observatoire de la Côte d'Azur, France)
  • Claudia Paladini (ESO, Chile)
  • Alex de Koter (University of Amsterdam, The Netherlands)
  • Elisabeth Humphreys (Joint ALMA Observatory, Chile)


miguel.montarges @ observatoiredeparis.psl.eu

Updated on Tue Sep 07 11:57:23 CEST 2021