The red star in the right top portion of this picture is Betelgeuse, one of the...

   

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The red star in the right top portion of this picture is Betelgeuse, one of the most prominent stars in the constellation Orion. You can easily see this constellation during winter in the northern hemisphere. Betelgeuse is a red supergiant star which is - 634 light years from Earth. To measure the surface temperature of stars astronomers use Wien's law which relates the maximum wavelength of light emitted to the temperature. Mathematically Wien's law is written XmaxT= 0.2898 cm K. Betelgeuse has a Amax of 8072 where 1 = 1 x 10-8 cm. What is Betelgeuse's surface temperature, in K? The red star in the right top portion of this picture is Betelgeuse, one of the most prominent stars in the constellation Orion. You can easily see this constellation during winter in the northern hemisphere. Betelgeuse is a red supergiant star which is - 634 light years from Earth. To measure the surface temperature of stars astronomers use Wien's law which relates the maximum wavelength of light emitted to the temperature. Mathematically Wien's law is written XmaxT= 0.2898 cm K. Betelgeuse has a Amax of 8072 where 1 = 1 x 10-8 cm. What is Betelgeuse's surface temperature, in K?

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Wiens law indeed relates the maximum wavelength of light emitted by a star to its temperature The fo... View the full answer