In Astronomy, a white star of the principal sequence is a star of standard spectral has and Classe of luminosity V.

This type of stars should not be confused with the white dwarf , which are star residues of low mass.

Characteristics

The white stars of the principal sequence, as their name indicates it, are stars of the principal Séquence (Classe of luminosity V in classification MKK), whose energy comes from the fusion of their Hydrogène in Hélium.

Of type has in the classification of Harvard, them spectrum has rather intense hydrogen lines, as well as ionized metal lines. Their temperature of surface varies between 7.100 and 9.750 K and their mass between 1,5 and 3 solar masses.

Examples

• Sirius has
• Véga

See too

• white Star
• principal Sequence
• Standard spectral

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