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A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses (M ☉)) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around 5,000 K [K] (4,700 °C; 8,500 °F) or lower.
Largest known white dwarf. Part of a symbiotic binary star system containing a red giant and a white dwarf. [167] 55 Cancri B 186,447.5 Red dwarf [168] LTT 1445 A 188,500 Red dwarf: Has three confirmed exoplanets, one of them is in the habitable zone [169] Struve 2398 B 189,925 [113] Gliese 105 B (268 G. Ceti B) 193,405 [113] LHS 475: 194,030.5
A red giant is a luminous giant star of low or intermediate mass that is in a late phase of its evolution. Subcategories. This category has the following 7 ...
UY Scuti is a dust-enshrouded bright red supergiant [16] and is classified as a semiregular variable with an approximate pulsation period of 740 days. [5] [17] [18] Based on an old radius of 1,708 R ☉, this pulsation would be an overtone of the fundamental pulsation period, or it may be a fundamental mode corresponding to a smaller radius. [19]
The red giant π1 Gruis is 530 light-years away, and it's reaching the end of its natural life. Soon, scientists think it will become a planetary nebula. But before it dies, astronomers are using ...
The nearest yellow giant, together with Capella A. With a magnitude of 0.08, [ 11 ] the Capella star system is the 6th-brightest star in the night sky. Capella B
Red supergiants develop deep convection zones reaching from the surface over halfway to the core and these cause strong enrichment of nitrogen at the surface, with some enrichment of heavier elements. [26] Some red supergiants undergo blue loops where they temporarily increase in temperature before returning to the red supergiant state. This ...
This red giant star will, one day, explode as a supernova. ... Astronomy News with The Cosmic Companion is also available as a weekly podcast, carried on all major podcast providers. Tune in every ...