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Classifying Stars

QuestionAnswer
H-R diagram A diagram which shows the relationship between the brightness and temperature of stars
Red giants on HR diagram high brightness, low temperature
Blue giants on HR diagram high brightness, high temperature
White Dwarfs on the HR Diagram low brightness, high temperature
Left Side Where on the HR Diagram are hottest stars located?
Right Side Where on the HR Diagram are the coolest stars located?
Top Where on the HR Diagram are the brightest stars located?
Bottom Where on the HR Diagram are the dimmest stars located?
Absolute Brightness What is another word for luminosity?
main sequence a diagonal area on an H-R diagram that includes more than 90 percent of all stars.
Relationship of brightness and temperature in Main Sequence As temperature increases, brightness increases.
apparent brightness the brightness of a star as it appears from Earth
absolute brightness The brightness of a star if it were a standard distance from Earth
 



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