Blue supergiants (BSGs) are hot luminous stars, referred to scientifically as OB supergiants. They have luminosity class I and spectral class B9 or earlier.
They are found towards the top left of the Hertzsprung-Russell diagram to the right of the main sequence. 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 10,000 to a million times the sun.
Other articles related to "supergiants, blue, blue supergiant, supergiant, blue supergiants":
... of yellow hypergiants are post-red supergiants evolving blueward, while more stable and less luminous yellow supergiants are likely to be evolving to red supergiants for the first time ... There exists strong chemical and surface gravity evidence that the brightest of the yellow supergiants, HD 33579, is a high mass star currently expanding from a ... Red supergiants may execute several "blue loops", shedding much of their atmosphere but without actually ever reaching the blue supergiant stage, each one taking only a few decades at most ...
... designation Alpha Orionis, is a massive M-type red supergiant star nearing the end of its life ... which is also known as Beta Orionis, is a B-type blue supergiant that is the sixth brightest star in the night sky ... Rigel is fusing heavy elements in its core and will pass its supergiant stage soon (on an astronomical timescale), either collapsing in the case of a supernova or shedding its outer ...
... progenitor star was tentatively identified as Sanduleak -69° 202, a blue supergiant ... was an unexpected identification, because at the time a blue supergiant was not considered a possibility for a supernova event in existing models of high mass stellar ... However it is now widely understood that blue supergiants are natural progenitors of supernovae, although there is still speculation that the evolution of such stars requires mass loss involving a binary companion ...
... 29 Canis Majoris (29 CMa),a blue-white (O-type) supergiant ... Rigel (β Orionis),a blue-white (B-type) supergiant ... Zeta Puppis (Naos),a blue (O-type) supergiant ...
Famous quotes containing the word blue:
“Two wooden tubs of blue hydrangeas stand at the foot of the stone steps.
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The grackles crack their throats of bone in the smooth air.
Moisture and heat have swollen the garden into a slum of bloom.
Pardie! Summer is like a fat beast, sleepy in mildew....”
—Wallace Stevens (18791955)