Hertzsprung-Russell Diagram

In the Hertzprung-Russell diagram the temperatures of stars are plotted against their luminosities. The position of a star in the diagram provides information about its present stage and its mass. Stars that burn hydrogen into helium lie on the diagonal branch, the so-called main sequence. Red dwarfs like AB Doradus C lie in the cool and faint corner. AB Dor C has itself a temperature of about 3,000 degrees and a luminosity which is 0.2% that of the Sun. When a star exhausts all the hydrogen, it leaves the main sequence and becomes a red giant or a supergiant, depending on its mass (AB Doradus C will never leave the main sequence since it burns so little hydrogen). Stars with the mass of the Sun which have burnt all their fuel evolve finally into a white dwarf (left low corner).

Crediti:

ESO

A proposito dell'immagine

Identificazione:eso0728c
Tipo:Grafico
Data di pubblicazione:19 Giugno 2007
Notizie relative:eso0728
Dimensione:2662 x 2652 px

A proposito delll'oggetto

Nome:Hertzsprung–Russell diagram, HR Diagram, Stars
Tipo:Unspecified : Star
Categoria:Stars

Formati delle immagini

JPEG grande
569,2 KB

Sfondi

1024x768
121,5 KB
1280x1024
171,5 KB
1600x1200
223,2 KB
1920x1200
235,7 KB
2048x1536
318,6 KB

 

Vedere anche