Chi Cygni
Chi Cygni is a Mira variable star located in the Cygnus constellation. It is 737 times larger than the Sun.[1] Chi Cygni is a red giant star that is about to end its life.
Chi Cygni Media
Illustration of Cygnus from Urania's Mirror, with χ marked as variable
χ Cygni light curve from 2006 to 2010. Note that dates are in the MM/DD/YY format
Visualisation of Mira variable made by "Astrophysics student research club of Gdańsk University of Technology" 2022
Chi Cygni photographed every ~10days during its 10 magnitude luminosity cycle
Changes in the visual magnitude, temperature, radius, and bolometric luminosity as χ Cygni pulsates
The spectacular dimming of Chi Cygni is largely driven by a wavelength shift during its cycle. Even when very dim in visible light it's bright in the infrared.
Evolutionary track for an intermediate mass star similar to χ Cygni
References
- ↑ Menten, K. M.; Kemper, F.; Verhoelst, T.; Justtanont, K.; Koter, A. de; Decin, L.; Beck, E. De (1 November 2010). "Probing the mass-loss history of AGB and red supergiant stars from CO rotational line profiles - II. CO line survey of evolved stars: derivation of mass-loss rate formulae". Astronomy & Astrophysics. 523: A18. arXiv:1008.1083. Bibcode:2010A&A...523A..18D. doi:10.1051/0004-6361/200913771. S2CID 16131273 – via www.aanda.org.
