Physics 202: Introduction to Astronomy

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Physics 202 Introduction to Astronomy Lecture
15

• Carsten Denker
• Physics Department
• Center for SolarTerrestrial Research

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H-R Diagram and Star Clusters

• Spectroscopic parallax
• Luminosity classes
• Stellar Masses
• Binary-star systems
• Visual binaries
• Eclipsing binaries
• Spectroscopic binaries
• Star clusters
• Open clusters
• Associations
• Globular clusters

• Stellar sizes
• Direct measurements
• Luminosity-temperature-radius relationship
• Giants and dwarfs
• Hertzsprung-Russell diagram
• Main-sequence
• Distance scale

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Stellar Sizes
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Cosmic Distance Scale
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Stellar Masses
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Hertzsprung-Russell Diagram
Nearby stars
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Brightest stars
Hipparcos catalogue
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Star Clusters