Reply To: Betelgeuse

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#613546
Jeremy Shears
Participant

Incredible as it may seem, it’s almost 3 years since the Great Dimming of Betelgeuse first hits the news. New papers continue to be published on the star, including a couple on the last 2 days:

UBVRI photometry of Betelgeuse over 23 years since 1999
Yojiro Ogane, Osamu Ohshima, Daisuke Taniguchi, Naohiro Takanashi
https://arxiv.org/abs/2211.04512

Analysis of photometric and spectroscopic variability of red supergiant Betelgeuse
Daniel Jadlovsky, Jiri Krticka, Ernst Paunzen, Vladimir Stefl
https://arxiv.org/abs/2211.04380

The second paper says that after the Dimming, the Betelgeuse mode of variability has fundamentally changed and is now instead following a shorter period of ∼200d (cf ~400+d, plus several longer periods, in previous epochs)