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Chi Cygni
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Chi Cygni is a Mira variable star in the constellation Cygnus, and also an S-type star. Its name is a Bayer designation that is Latinized from χ Cygni, and abbreviated Chi Cyg or χ Cyg. It is around 5
Illustration of Cygnus from Urania's Mirror, with χ marked as variable
Illustration of Cygnus from Urania's Mirror, with χ marked as variable
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
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.
S-type star
Videos
An S-type star is a cool giant star with approximately equal quantities of carbon and oxygen in its atmosphere. The class was originally defined in 1922 by Paul Merrill for stars with unusual absorpti
Chi Cygni
…Chi Cygni is a Mira variable star in the constellation Cygnus, and also an S-type star. Its name is a Bayer designation that is Latinized from χ Cygni, and abbreviated Chi Cyg or χ Cyg. It is around 500 light years away. χ Cygni is an…
W Aquilae is an S-type star and Mira variable with a close companion resolved by the Hubble Space Telescope.
W Aquilae is an S-type star and Mira variable with a close companion resolved by the Hubble Space Telescope.
The surface of the red giant star π1 Gruis from PIONIER on the VLT
The surface of the red giant star π1 Gruis from PIONIER on the VLT