Question

Assume that the stars are ideal thermal radiators and hence, stellar spectra is that of a blackbody. Surface temperature
of three stars Rigel, Sun and Betelgeuse are ∼ 12100 K, ∼ 5800K and 3400 K respectively. The observed peak of the
spectral energy density of the Sun is at ν = νmax = 600 T Hz. What is the value of Wien’s constant? What are the
frequencies at which maximum power is radiated by the other two stars? Can you guess what color these stars will appear
to have?

Answer 1

Answer:

b= 2.9 * 10^-3 K-m

freq of rigel = 1251.724 * 10^12 Hz

freq of betelguse = 351.724 THz

Explanation:

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