The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun
Published February 21, 2023 | Version 2
Conference paper Open

A Surface Mass Ejection (SME) from Betelgeuse

Authors/Creators

  • 1. Center for Astrophysics | Harvard \& Smithsonian,
  • 2. AAVSO
  • 3. Dept. Physics & Astronomy, Texas A&M University
  • 4. Leibniz-Institut f\"ur Astrophysik Potsdam (AIP)}

Description

The sequence  of spectroscopic and photometric measurements and diagnostics preceding, during, and following the Great Dimming of Betelgeuse (2019 - 2020), gives evidence of a large surface mass ejection (SME) from the photosphere of the supergiant star.  This outburst and its immediate effects spanned more than a year, and now in 2023, the star is still recovering from the event, entering year 5 of the disturbance and its consequences.  This phenomenon was observed intensively for the first time - and
represents an additional process of mass loss from luminous stars. 

 

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References

  • Bedding, T. R. et al. (2002), MNRAS, 337, 79
  • Dupree, A. K. et al. (2020), ApJ, 899, 68
  • Dupree, A. K. et al. (2022), ApJ, 936, 18
  • Goldman, S. R. et al. (2022) RNAAS, 6, NO. 8
  • Granzer, T. et al. (2021), CS20half, 41 (zenodo)
  • Granzer, T. et al. (2023) CS21, (zenodo)
  • Harper, G. M. et al. (2017), AJ, 154. 11
  • Harper, G. M. et aL. (2020), ApJ, 905, 34
  • Humphreys, R. et al. (2022), AJ, 163,103
  • Joyce, M. et al. (2020), ApJ, 902, 63
  • Kravchenko, K. et al. (2021), A&A, 650, L17
  • Levesque, E. M. et al. (2020), ApJ, 891, L37
  • Massey, P. et al. (2023), ApJ, 942, 69
  • Mathias,, P. et al. (2018), A&A, 615, 116
  • Montarg\`es, M. et al. (2021), Nature, 594, 365
  • Ohnaka, I. et al. (2011), A&A, 529, 163
  • Taniguchi, D. et al. (2022), Nature Astronomy, 6, 930
  • Tian, H. et al. (2021), SoPh, 296, 47
  • Vanninathan, K. et al. (2018), ApJ, 857, 62