Gsu astr 1020 - Study guides, Class notes & Summaries
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GSU ASTR 1020 Final Exam Questions and Answers 2024
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Luminosity - The total amount of power a star emits into space that's measured in watts. 
 
Apparent Brightness - Amount of starlight that actually reaches Earth 
 
HR Diagram - is a graphical tool that astronomers use to classify stars according to their luminosity, spectral type, color, temperature and evolutionary stage. Stars in the stable phase of hydrogen burning lie along the Main Sequence according to their mass. 
 
OBAFGKM - Oh Be A Fine Girl Kiss Me 
 
Main Sequence - the vast majorit...
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