WOH G64

Large Magellanic Cloud

Artist's impression of WOH G64

WOH G64 is a red supergiant star. It could be the largest known star in the known universe,^[1] with a radius of about 1,540 times that of the Sun.^[2]

A picture of it was published in 2024's fourth quarter; The byline of the picture said that it is the first close-up picture of a star outside the Milky Way; Its photo credit is ESO/K. Ohnaka and some other people.^[3]

The star is in the constellation of Dorado.

The star is also one of the coolest stars in the Large Magellanic Cloud, with an effective temperature of 3,400 Kelvin. It is a possible Mira variable.

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.^[4] If placed at the center of the Solar System, the star's photosphere would engulf the orbit of Jupiter.

WOH G64 Media

WOH G64, compared to the sun in size according to its size estimate of 1,540 solar radii. WOH G64 is one of the more likely candidates for being the largest known star.

References

↑ Jones, O. C.; Woods, P. M.; Kemper, F.; Kraemer, K. E.; Sloan, G. C.; Srinivasan, S.; Oliveira, J. M.; Van Loon, J. Th.; Boyer, M. L.; Sargent, B. A.; McDonald, I.; Meixner, M.; Zijlstra, A. A.; Ruffle, P. M. E.; Lagadec, E.; Pauly, T.; Sewiło, M.; Clayton, G. C.; Volk, K. (2017). "The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification – III". Monthly Notices of the Royal Astronomical Society. 470 (3): 3250–3282. doi:10.1093/mnras/stx1101.
↑ 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.
↑ https://yle.fi/a/74-20125727. Retrieved 2024-11-21
↑ 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 short article about physics can be made longer. You can help Wikipedia by adding to it.

[1] Jones, O. C.; Woods, P. M.; Kemper, F.; Kraemer, K. E.; Sloan, G. C.; Srinivasan, S.; Oliveira, J. M.; Van Loon, J. Th.; Boyer, M. L.; Sargent, B. A.; McDonald, I.; Meixner, M.; Zijlstra, A. A.; Ruffle, P. M. E.; Lagadec, E.; Pauly, T.; Sewiło, M.; Clayton, G. C.; Volk, K. (2017). "The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification – III". Monthly Notices of the Royal Astronomical Society. 470 (3): 3250–3282. doi:10.1093/mnras/stx1101.

[2] 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.

[3] ttps://yle.fi/a/74-20125727. Retrieved 2024-11-21

[ohnaka-4] 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.

[1]

[2]

[3]

[4]