Astrophysics (index)about

B-type star

(B)
(type of star with about 10 times the mass of the Sun)

A B-type star is a star in the B-class, a spectral class for stars of around 10 solar masses and 5 times solar radius. They burn up their hydrogen in a few hundred million years. They have medium hydrogen absorption lines. Characteristics:

blue-whiteconventional color
10500-33000Ksurface temperature
3-8radius
3-18mass
-3.3-1.1absolute magnitude(visual)
40-24000luminosity(bolometric)
10-500 million yearsmain-sequence lifetime
.13%abundance

(star type,spectral type)
http://en.wikipedia.org/wiki/Stellar_classification
WaveLFreqPhoton
Energy
  
97nm3.1PHz13eVbeginB-type star
145nm2.1PHz8.6eVendB-type star

Referenced by:
Ap star
Be star
Gould's Belt
OB association
OB star
Orion
star formation rate (SFR)
solar wind
spectral class
stellar association

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