WOH G64

WOH G64 is a symbiotic binary with a yellow hypergiant star in the constellation of Dorado. It was the first star outside of the Milky Way to have a direct image taken of it.

It was formerly thought to be one of the largest known stars in the known universe with a radius of about 1,540 times that of the Sun,[1] however, in 2014 it rapidly transitioned into a yellow hypergiant, shrinking to a smaller radius 800 times that of the Sun, with a temperature of 4,700 kelvin.[2]

WOH G64 is surrounded by a thick dust envelope of about a light year in diameter. This envelope is made of expelled material and is three to nine times the Sun's mass. It was created by the strong stellar wind.[3] If placed at the center of the Solar System, the star's photosphere would engulf the orbit of Mars.

References

  1. ↑ Levesque, Emily M.; Massey, Philip; Plez, Bertrand; Olsen, Knut A. G. (2009-06-01). "The physical properties of the red supergiant WOH G64: the largest star known?". The Astronomical Journal. 137 (6): 4744–4752. arXiv:0903.2260. Bibcode:2009AJ....137.4744L. doi:10.1088/0004-6256/137/6/4744. ISSN 0004-6256. S2CID 18074349.
  2. ↑ Munoz-Sanchez, Gonzalo; Kalitsounaki, Maria; de Wit, Stephan; Antoniadis, Kostantinos; Bonanos, Alceste; Zapartas, Emmanouil; Boutsia, Konstantina; Christodoulou, Evangelia; Maravelias, Grigoris (2024-11-28). "The dramatic transition of the extreme Red Supergiant WOH G64 to a Yellow Hypergiant". doi.org. doi:10.21203/rs.3.rs-5551282/v1. Retrieved 2025-02-13.
  3. ↑ Ohnaka, K.; Driebe, T.; Hofmann, K.H.; Weigelt, G.; Wittkowski, M. (2009). "Resolving the dusty torus and the mystery surrounding LMC red supergiant WOH G64". Proceedings of the International Astronomical Union. 4: 454–458. Bibcode:2009IAUS..256..454O. doi:10.1017/S1743921308028858.


This article is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.