What is an example of a blue giant star?
A famous examples of a bright blue giant star is Spica, a binary system whose primary component is a blue giant, and together with its companion, make up the 4 brightest star in the constellation Virgo.
Are there blue stars in space?
Blue supergiants are supergiant stars (class I) of spectral type O. They are extremely hot and bright, with surface temperatures of between 20,000 – 50,000 degrees Celsius. The best known example is Rigel, the brightest star in the constellation of Orion.
How many blue stars are there in the universe?
Alnitak is actually the brightest example of a type O star in the entire night sky. It’s a multiple star system, some 1,250 light years away, with the largest member being a blue supergiant some 33 times the mass of the Sun and with a luminosity of over 200,000 Suns.
Is the sun a blue star?
Our Sun is classified as a yellow dwarf and is very much an average mid range star with a surface temperature of about 6000ºC. Blue or even blue/green stars are very hot up to 50,000ºC and are normally giant young stars which are very active or even ‘hyper-active’. They are all young because they don’t live very long.
What type of stars are blue?
Spectral Classes
| Star Type | Color | Examples |
|---|---|---|
| B | Blue | Rigel Spica |
| A | Blue | Sirius, Vega |
| F | Blue to White | Canopus, Procyon |
| G | White to Yellow | Sun, Capella |
Are blue stars bigger than the Sun?
A blue giant star can put out 10,000 times as much energy as the Sun. Astronomers categorize blue giants as type O or B stars, belonging to the luminosity class III. These can be a blue star with surface temperatures of 20,000 – 50,000 Kelvin and can be 25 times larger than the Sun.
How common are blue stars?
Blue Period Luminous blue variable (LBV) stars are indeed incredibly rare; astronomers have only identified about 20 (maybe) and suspect there are only a few hundred in the Milky Way, tops. Since they’re so rare, they’re poorly understood. And since they’re so poorly understood, they’re hard to characterize.
How old is a blue giant star?
They only live around 10 million years, which sounds like a long time until you realize the sun can live to be 10 billion. While they’re alive, blue supergiants produce a tremendous amount of energy within themselves.
Is blue star hotter than sun?
Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all. Many stars are bigger and hotter than the sun.