Astrophysics (index)

O-Type Star

(O)
(type of star with about 50 times the mass of the Sun)

An O-Type Star (O) is of the O-Class, a Spectral Class for stars of around 50 times solar mass and 10 times solar radius. They burn up their Hydrogen (H) in a few million years. They have weak hydrogen Absorption Lines. Characteristics:

blueconventional color
33000-48000KSurface Temperature
9.5-16Radius
23-90Mass
-4.5 to -3.6Absolute Magnitude (M)(visual)
55,000-1,000,000Luminosity (L)(bolometric)
2-9 Million YearsMain sequence lifetime
.00001%Abundance

(star type,spectral type)
http://en.wikipedia.org/wiki/Stellar_classification
WaveLFreqPhoton
Energy
  
72.5nm4.2PHz17eVbeginO-Type Star
97nm3.1PHz13eVendO-Type Star

Referenced by:
Be Star
Globular Cluster (GC)
Markarian Galaxy (Mkn)
O5 Spectral Class (O5)
OB Association
Orion
Star Formation Rate (SFR)
Solar Wind
Spectral Class
Stellar Association

index