The color of a star is related with the wavelength of the light observed. Wien's Law states that:
Peak Wavelength x Surface Temperature = 2.898x10-3
Peak Wavelength is the wavelength of the highest intensity light coming from a star.
The color of a star is a good indicator of its temperature.
Its temperature.
Ejnar Hertzsprung and Henry Norris Russell,working independently, realized the relationship between a star's temperature and its brightness.Together, in 1910, they formed what is now known as the Hertzsprung--Russell diagram or HR Diagram.It's a scatter graph showing the relationship between a star's absolute magnitudes, their spectral types and temperatures.
Alnilam is a blue-white super giant star, with a surface temperature of around 27,000 Kelvin.
The temperature affects the color of a star.
The relationship is that the color is an indication of the star's surface temperature. For example, red stars are cooler, while blue stars are hotter. You can find more details in the Wikipedia article "Stellar classification".
Blue stars are the hottest, and red stars the coolest. Our sun is orangey, so it's kinda in between blue (hot) and red (cool).
Hertzsprung and Russell.
Hertzsprung and Russell.
The Hertzsprung-Russel diagram shows brightness versus color (the color reflects the star's temperature).
The color of the star Indicates its Temperature.
Brightness tells you the temperature and mostly temperature would tell the brightness of the star that we are talking about.
you can tell the temperature by its color
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the relationship between a star's luminosity, temperature, absolute magnitude, and spectral type.
The answer to this question is Hertzsprung-Russell diagram
So in terms of of color red is cool, yellow is medium, blue-violet is hot.