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Soubor:Hertzsprung-Russell Diagram - ESO.png

Z Multimediaexpo.cz

Obrázek + Description:

  • English: 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).
  • Date: 19 July 2007
  • Source: https://www.eso.org/public/images/eso0728c/
  • Author: ESO
+ pochází z Wikimedia Commons, kde má status – This file is licensed under the Creative Commons Attribution 4.0 International license. (CC BY 4.0)
  • This media was created by the European Southern Observatory (ESO).
  • Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible."

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