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A blue supergiant (BSG) ... They are larger than the Sun but smaller than a red supergiant, with surface temperatures of 10,000–50,000 K and luminosities from about ...
Their temperatures exceed around 10,000 K, and they have zero age main sequence ... bright blue giant, blue supergiant, and yellow supergiant classes, until they ...
The temperature range of supergiant stars spans from about 3,400 K to over 20,000 K. ... The number of post-main sequence blue supergiants is greater than those ...
Rigel is a blue supergiant that has exhausted the hydrogen fuel in its core, expanded and cooled as it moved away from the main sequence across the upper part of the Hertzsprung–Russell diagram. [5] [68] When it was on the main sequence, its effective temperature would have been around 30,000 K. [69]
These stars have from 2 to 16 times the mass of the Sun and surface temperatures between 10,000 and 30,000 K. [1] B-type stars are extremely luminous and blue. Their spectra have strong neutral helium absorption lines, which are most prominent at the B2 subclass, and moderately strong hydrogen lines. Examples include Regulus, Algol A and Acrux. [2]
“What we do know, is that one such supernova seen in the same galaxy in 1987 to every astronomer’s surprise was a blue supergiant that had exploded. The Hubble Space Telescope soon revealed it ...
Deneb is a bluish-white star of spectral type A2Ia, classifying it as a blue supergiant star [31] with a surface temperature of 8,500 kelvin. Since 1943, its spectrum has served as one of the stable references by which other stars are classified. [5] Its mass is estimated at 19 M ☉.
Temperature: 36,000 K: Rotation: 210 ... (λ Cephei) is a fifth magnitude blue supergiant star in the constellation Cepheus, one of the hottest and most luminous ...