Question

the temperature of star can be estimated by​

Answer 1

By Wien constant a temperature of a star can be estimated.

As the max wavelength emitted..

Answer 2

So, to summarize, if a star is a brilliant blue color, it's really hot and emits a lot of energy. If it's red, it has a cool surface temperature instead. Therefore, the dominant wavelength of a star's light can tell us its surface temperature.