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Answered 2017-11-03 06:07:16

The color of a star's visible light indicates its surface temperature: a relatively cool star glows red (longer wavelength), and very hot ones glow bluish-white or even blue (shorter wavelengths).

* Blue more than 30,000 °Kelvin * Blue to blue white 10,000 to 30,000 °Kelvin * White 7,500 to 10,000 °Kelvin * Yellowish White 6,000 to 7,500 °Kelvin * Yellow 5,200 to 6,000 °Kelvin * Orange 3,700 to 5,200 °Kelvin * Red 1,000 to 3,700 °Kelvin * Brown less than 1,000 °Kelvin

* Black close to 0 °Kelvin The relationship is λmax*T=2.898*10^-3m°K Where λmax is the wavelength at which the star emits the maximum amount. So, for example for the Sun λmax = 5.1 nm Therefore T=(2.898*10^-3m°K)/(5.1*10^-9m) T=568,000 °C So as an object increases in temperature, its colour will slowly change, starting at red and progressing into blue and beyond.





A stars temperature is generally worked out by the average temperature of the photosphere.

This is not typical through out the star however.

The Solar Corona which is above the photoshere is very hot indeed, several million degrees. We normally cant see this because it does not shine in visible light. We only see this during an eclipse. It the bright band that is visible that seems to surround the moon during a solar eclipse. It is caused when matter is excited by the solar magnetic field.

Hotter still is the core. In the sun this is thought to be 10 - 20 million degrees. These temperatures are due to the pressure caused by gravity trying to compress the star. It has to be this temperature for fusion of hydrogen to take place. Once fusion starts in a young star this adds to the temperature to ensure that fusion continues.
The star's temperature is depended on the color of the star, blue is the hottest ,and red is the coolest.
the red stars are at under 3,500 K

the white and yellow stars are at 5,000 - 6,000 K

the blue and white stars are at 6,000 - 7,500 K

the blue stars are at over 25,000 K

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Size and color are not directly related at all. The color of a star is instead related to it's temperature, with red (class M) stars being the coolest and blue stars (class O) being the hottest.


the color of stars with the lowest surface temperature is red


The Color of stars depends upon their surface temperature.


No. Stars vary in lots of aspects, including:* Diameter * Mass * Color (and the related surface temperature) * Chemical composition * Density (related to mass and diameter) * Brightness


Red stars have the coolest surface temperature. Blue color stars have the highest surface temperature. The Sun belongs to the main sequence stars.


A stars color reveals its surface temperature. x


you can tell the temperature by its color


The stars temperature will be greater than 30,000 K


The temperature determines the color of the star!:)


All stars are hot. Their temperature can be determined by their color. The "coolest" stars are red in color. As temperature increases stars will go through orange, yellow, white, and finally blue for the hottest stars.



Young stars are mostly blue. Young stars, at the peak of their temperature, represent the color blue because blue is the hottest color of known stars.


Those characteristics depend mainly on a star's mass. Most stars would start consisting mainly of hydrogen-1. After a while, they burn up that fuel, and have more helium-4. Later they can create heavier elements (the so-called "metals"). The color of a star depends almost entirely on its surface temperature. The hottest stars are blue or bluish white in color. (The star's chemical composition only affects the narrow "absorption" lines in the otherwise continuous spectrum.) For "Main Sequence" stars that temperature is closely related to the star's mass. Also the size is related to mass. So, in simple terms, more mass means higher temperature and size. Most stars are Main Sequence stars, but many are not. Things for those other stars are more complicated. Color and temperature are still closely related. However, color and size are no longer related in a simple way. For example, a red giant star is much larges than a red dwarf star, but has a similar surface temperature.


no, stars temperature are diffrent according to their color. for instance, blue white stars are hotter than red stars


Size, color and temperature.




the color of the temperature of the star.


Because the temperature is changed.


The colour depicts the temperature.


A star's color is related to its surface temperature.


Generally, yes. For stars on the main sequence, meaning that they fuse hydrogen at their cores, mass, size, color, brightness, and temperature are all closely related. More massive stars are larger, brighter and hotter than less massive ones. The least massive stars are red. As you go to more massive stars color changes to orange, then yellow, then white, and finally to blue for the most massive stars.


The color of stars determines temperature. Red/brown stars are cooler, blue stars are hotter, and yellow stars are in between. Brightness also has some correlation with color. Both are based on many varying factors however.



The color of a star depends on its surface temperature. But hot stars are blue, and medium-hot stars are white, and cool stars are red.



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