Stars located in a certain cluster are assumed to be about the same distance from us Two such stars have spectra that peak at 1 470nm and 2 720 nm, and the ratio of their apparent brightness is b1 b2 0 091 Estimate their relative sizes (give ratio of their diameters) using Wien 's law and the Stefa...

Wiens law Eq 272 says that where is a constant so The StefanBoltzmann equation Eq 146 s ...

Stars located in a certain cluster are assumed to be about the same distance from us. Two

Question:

Stars located in a certain cluster are assumed to be about the same distance from us. Two such stars have spectra that peak at λ1 = 470nm and λ2 = 720 nm, and the ratio of their apparent brightness is b1/b2 = 0.091. Estimate their relative sizes (give ratio of their diameters) using Wien's law and the Stefan-Boltzmann equation, Eq. 14-6.