Mu Cephei
Mu Cephei, also known as Herschel's Garnet Star due to its red, garnet-like color, is a red hypergiant star in the Cepheus constellation. With a radius between 1,260 and 1,420 solar radii,[1][2] or a diameter between 1.7 and 2 billion kilometers, it is one of the largest stars known. This means Mu Cephei is twice the size of the more famous star Betelgeuse.[3] Mu Cephei is also 269,000 times brighter than the Sun.[4] Mu Cephei is also the "prototype" of the semiregular variable star type.
- Erakis (Garnet Sidus).jpg
- Mu cephei.jpg
Artist's picture
Mu Cephei Media
- William Herschel01.jpg
1785 portrait of William Herschel
- Granatstern.webm
Zooming to the μ Cep (Garnet star) in the constellation Cepheus.
- MuCephei.jpg
Mu Cephei (circled) as can be seen in binoculars. The bright star on the right is Alderamin (Alpha Cephei).
- Mu Cephei "The Garnet Star" 2023 (Ha and OIII).png
Mu Cephei and surrounding nebulosity, imaged at H-alpha and OIII wavelengths (north is towards top left)
- MuCepLightCurve.png
A visual band light curve for Mu Cephei, adapted from Brelstaff et al. (1997)
Size comparison of μ Cephei and the Sun.
Related pages
References
- ↑ Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ Emily M. Levesque1 et al 2005. "The effective temperature scale of galactic red supergiants: cool, but not as cool as we thought" Astrophysical Journal 628, 2. [1]
- ↑ Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ Davies, Ben; Beasor, Emma R. (2020-03-21). "The 'Red Supergiant Problem': the upper luminosity boundary of type-II supernova progenitors". Monthly Notices of the Royal Astronomical Society. 493 (1): 468–476. arXiv:2001.06020. doi:10.1093/mnras/staa174. ISSN 0035-8711.
