The dramatic transition of the extreme Red Supergiant WOH G64 to a Yellow Hypergiant

Red Supergiants (RSGs) are cool, evolved massive stars in their final evolutionary stage before exploding as a supernova. However, the evolution and fate of the most luminous RSGs is uncertain. Observational evidence for luminous warm, post-RSG objects and the lack of luminous RSGs as supernova prog...

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