Suppose the peak of a particular star's spectrum occurs at about 2,000 . (a) Use Wien's...

 

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Suppose the peak of a particular star's spectrum occurs at about 2,000 . (a) Use Wien's law to calculate the star's surface temperature. (b) If this star were a factor of 6 cooler, at what wavelength would its spectrum peak? (c) In what part of the electromagnetic spectrum is the peak of this cooler star? (Note: 10 = 1 nm, if you prefer to use nanometer units.) (11) (224 points.) (a) Compare the luminosity (power; amount of energy given off per second) of the Sun with that of a star the same size but four times as hot at its surface. (b) Answer the same question, but now assume the star also has three times the Sun's radius. Suppose the peak of a particular star's spectrum occurs at about 2,000 . (a) Use Wien's law to calculate the star's surface temperature. (b) If this star were a factor of 6 cooler, at what wavelength would its spectrum peak? (c) In what part of the electromagnetic spectrum is the peak of this cooler star? (Note: 10 = 1 nm, if you prefer to use nanometer units.) (11) (224 points.) (a) Compare the luminosity (power; amount of energy given off per second) of the Sun with that of a star the same size but four times as hot at its surface. (b) Answer the same question, but now assume the star also has three times the Sun's radius.

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a To calculate the surface temperature of the star using Wiens law we can use the formula max b T where max is the peak wavelength in meters b is Wien... View the full answer