Unveiling the Mysteries of WOH G64: A Complex Red Supergiant Star in the Large Magellanic Cloud

Saturday 01 February 2025


A team of astronomers has made a fascinating discovery about a star located in the Large Magellanic Cloud, a nearby galaxy. Using advanced technology, they have obtained high-resolution images and spectra of the star, which is known as WOH G64.


WOH G64 is a red supergiant star, meaning it is extremely large and hot. It is one of the brightest stars in the Large Magellanic Cloud, but despite its size and brightness, it has been shrouded in mystery until now. The team used a combination of telescopes and instruments to study WOH G64, including the Very Large Telescope (VLT) in Chile.


One of the most interesting findings is that WOH G64 has a complex atmosphere. The star’s surface temperature is about 3,000 Kelvin, but it also has a layer of hot dust surrounding it. This dust is thought to be the result of material from the star being blown out into space and then falling back down.


The team used a technique called interferometry to create high-resolution images of WOH G64. They combined data from multiple telescopes to produce an image with a resolution of about 10 times higher than would be possible with a single telescope.


In addition to the images, the team also obtained spectra of WOH G64 using several different instruments. A spectrum is like a fingerprint of a star’s composition and temperature. By analyzing the spectra, the team was able to learn more about the star’s properties and behavior.


One of the most surprising findings is that WOH G64 is not just a simple red supergiant star. It appears to have a complex magnetic field, which is unusual for stars of its type. The team also found evidence of mass loss from the star, meaning it is losing material into space at a rate of about 1/100th the mass of our sun every year.


The study of WOH G64 provides valuable insights into the properties and behavior of red supergiant stars like it. These stars are important because they play a key role in the formation of heavy elements, such as carbon and oxygen, which are necessary for life on Earth.


In addition to its scientific importance, WOH G64 is also an attractive target for astronomers who study the formation and evolution of galaxies. The star’s complex atmosphere and magnetic field make it an interesting case study for understanding how stars like it form and evolve over time.


Cite this article: “Unveiling the Mysteries of WOH G64: A Complex Red Supergiant Star in the Large Magellanic Cloud”, The Science Archive, 2025.


Large Magellanic Cloud, Red Supergiant Star, Woh G64, Very Large Telescope, Interferometry, Spectra, Magnetic Field, Mass Loss, Stellar Evolution, Galaxy Formation


Reference: K. Ohnaka, K. -H. Hofmann, G. Weigelt, J. Th. van Loon, D. Schertl, S. R. Goldman, “Imaging the innermost circumstellar environment of the red supergiant WOH G64 in the Large Magellanic Cloud” (2024).


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