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 |