Study Plan

Learning Goals

By the conclusion of this chapter, you should be able to:
  1. Use the brightness of nearby stars and their distances from Earth to determine their luminosity.
  2. Infer the temperatures and sizes of stars from their colors.
  3. Determine the composition of stars from their spectra.
  4. Estimate the masses of stars.

Prepare and Assess


    1. Stellar Spectrum
      Section: 13.3
    2. H-R Diagram
      Section 13.5
    1. Spectrum Explorer
      Allows one to generate a variety of simulated spectra, depending on factors such as the type of source, luminosity class, spectral type, and individually selected elements.
    2. Eclipsing Binary Stars Simulator
      Properties of stars in a binary system such as mass, temperature, and inclination of orbit are combined in the simulation to show the effects on the observed light curve of the system.
    3. H-R Diagram Explorer
      Introduces the Hertzsprung-Russell Diagram, a plot showing the relationship between luminosity and temperature for stars. The explorer shows how these two properties are used to determine the radius of stars.
    4. Spectroscopic Parallax Simulator
      Shows how the information on the H-R Diagram can be used to find the distance to a star.

Reassess and Apply

  1. Additional comments or issues to report:

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