Betelgeuse in the IR

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#581878
Robin Leadbeater
Participant

It does indeed seem the fading of Betelgeuse has indeed been greatly exaggerated

I see there is now a recent H,J point in the AAVSO database (The first for over a year)

It shows that Betelgeuse is not fading in the IR where most of the flux is so it does  suggest there has not been any significant drop in bolometric luminosity, just a small drop in temperature which has produced an exaggerated effect at V mag, a region sensitive to changes in the depth of the molecular absorption bands.

Cheers

Robin