By the conclusion of this chapter, you should be able to:
- Use the brightness of nearby stars and their distances from Earth to determine their luminosity.
- Infer the temperatures and sizes of stars from their colors.
- Determine the composition of stars from their spectra.
- Estimate the masses of stars.
Prepare and Assess
- Stellar Spectrum
- H-R Diagram
- 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.
- 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.
- 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.
- 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
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