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Spectral Classes for Main Sequence Stars (table), Astronomy, General
Related Category: Astronomy, General
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Characteristics of Spectral Classes for Main Sequence Stars
| Class |
Color |
Surface Temperature |
Strong Lines | | O |
blue-white |
35,000C |
ionized helium |
| B |
blue-white |
21,000C |
helium |
| A |
white |
10,000C |
hydrogen |
| F |
creamy |
7,000C |
ionized calcium |
| G |
yellow |
6,000C |
calcium |
| K |
orange |
4,500C |
titanium oxide |
| M |
red |
3,000C |
titanium oxide |
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Related Link : spectral class
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