Astrophysics of Life - 9/30/10 Astrophysics of Life: Stars...

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9/30/10Astrophysics of Life: StarsWhat are characteristics of light?What is Wien’s Law?
What is Stefan’s Law?
PropertiesEach element produces its own unique pattern of lines (Emission line spectra)Absorption Line Spectra – spectrum of the SunOverall shape tells you the temperatureLuminosity and apparent brightnessStar B is more luminous, but they have the same brightness as seen from Earth (Star Bis closer)Can’t tell the difference just from the brightness. We need to know the distance.

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Term
Spring
Professor
Eikenberry
Tags
Astrology, Stefan, luminosity, apparent brightness

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