Which of the following physical properties of stars are plotted on an hr diagram? absolute brightness and size apparent magnitude and mass apparent magnitude and luminosity absolute brightness and temperature

The correct answer is absolute brightness and temperature.

Explanation:

The H-R diagram or Hertzsprung-Russell Diagram refers to a graphical apparatus, which are used by the astronomers to categorize stars on the basis of their spectral type, luminosity, evolutionary stage, and temperature. The majority of the stars are located on the prime sequence that elongates diagonally across the H-R diagram from high luminosity and high temperature to low luminosity and low temperature.

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you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

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