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doit_the_clown doit_the_clown
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7 years ago
If we restrict our measurements to a specific band of color or wavelength using an optical filter, what observations are necessary in order to determine the absolute magnitude of a star at this color?

(a)   Its apparent magnitude and its distance.
(b)   Its apparent magnitude and its temperature.
(c)   Its distance and its temperature.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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7 years ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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Thanks for your help!!
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2 hours ago
this is exactly what I needed
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