Hypergiant
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History
Enterprise approaches a hypergiant The rare hypergiant star is one which shares similar characteristics with a supergiant star, but is 100 times more massive than Sol.
Hypergiants are among the most luminous class of stars and this yellow hypergiant, dubbed IRAS 17163-3907, is 500,000 times brighter than our Sun.
* hypergiantSource: The Bright Star Catalogue, 5th Revised Ed., The Hipparcos Catalogue, ESA SP-1200
External links
* The Deep Photographic Guide to the Constellations: Sagittarius ...
Ia-0 (hypergiants or extremely luminous supergiants (later addition), Example: Eta Carinae (spectrum-peculiar)
Ia (luminous supergiants), Example: Deneb (spectrum is A2Ia)
Iab (intermediate luminous supergiants) ...
... two huge "hypergiant" stars circled by monstrous disks of what might be planet-forming dust.
First evidence of cracks in a neutron star's crust. The star cracked when it was rocked by the strongest "starquake" ever recorded.
A monster class G (G4) hypergiant (or G0 supergiant), it seems to be a part of a huge collection of hot, luminous stars called Cepheus OB1 (never mind that the star is in Cassiopeia, as the expanding group sprawls all over).
HD 75289 A is a yellow-orange main sequence dwarf star of spectral and luminosity type G0 V (Gratton et al, 1989), but it had been previously classified as bright as a supergiant (Ia) or a hypergiant (O) possibly because it was thought to be much ...
Another notable star that can be seen in Sagittarius is the Pistol Star, a bright blue hypergiant that is one of the most luminous stars discovered in the Milky Way. The Pistol Star is classified as a variable star.
All stars identified are evolved and very massive, spanning the full range of stellar oddities from Wolf-Rayet stars, OB supergiants, Yellow Hypergiants (nearly as bright as a million Suns) and Luminous Blue Variables (similar to the exceptional Eta ...
This will usually produce a supergiant or hypergiant star which runs short of "fuel" in a few million years and then undergoes gravitational collapse, produces a supernova or hypernova and spends the rest of its existence as a black hole.
 See also: Giant, Star, Solar, Supergiant, Light
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