WOH G64 [SEP] constellation
WOH G64
WOH G64 (IRAS 04553-6825) is a red hypergiant (RHG) or red supergiant (RSG) star in the Large Magellanic Cloud (LMC) satellite galaxy in the southern constellation of Dorado. It is one of the largest known stars, with a radius of , corresponding to a volume some 3.65 to 17 billion times bigger than the Sun. It is also one of the most luminous and massive red supergiants.
WOH G64 is surrounded by an optically thick dust envelope of roughly a light year
the LMC. In 2007, observers using the Very Large Telescope (VLT) showed that WOH G64 is surrounded by a torus-shaped cloud. Westerlund also discovered another notable cool hypergiant star, Westerlund 1-26, found in the massive super star cluster Westerlund 1 in the constellation Ara.
WOH G64 was also discovered to be a well-known source of OH, , and masers emission, which is typical of an OH/IR supergiant star. It also shows an unusual spectrum of nebular emission; the hot