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What Can The Color Of A Star Tell Us
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Published on Nov 21, 2015
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PRESENTATION OUTLINE
1.
WHAT CAN THE COLOR OF A STAR TELL US?
BY: NICK H. NICK J. MARLA
Photo by
ecstaticist
2.
COLOR OF STARS
The color of light that we actually observe is related to the speed at which its moving with respect to us
The color of light that a star emits is also somewhat related to its age
According to Hubble the color of stars can tell us wether the stars are receding from us and the speed of their acceleration
The temperature depends on some combination of the stars mass and evolutionary phase
The color of a star tells us it's temperature
Photo by
davedehetre
3.
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4.
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The color a star emits is different than the color that we observe
The Doppler affect changes the frequency of light waves
Frequency of light is directly related to its color
Light emitted by a star moving away from us appears more red
Light emitted by a star moving towards us appears more blue
Photo by
Cano Vääri
Nick Johnston
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