Extended Type Star Spectra

 

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OBAFGKM
Type O Stars
Type B Stars
Type Be Stars
Type A Stars
Type F Stars
Type G Stars
Type K Stars
Type M Stars
Extended Types
Unusual Types
Nova
Nebulae
Galaxies
Quasars
Planets
Comets
Wavelength Calibration

 

 

In addition to the traditional stellar classification sequence of OBAFGKM, astronomers have defined several extended types.

These types are W, L, T, Y, C, S, P & Q.

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