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Stars which are RED are cooler stars than the blue one, so Yes it is possible to distinguish coller stars by the naked eye.

Star Betelgeuseis called Ardra in Indian-Astronomy. Ardra in sankrith means wet. Betelgeuse is one of the red star and cooler than other bluestars.


I only wonder, how ancientpeople could have imagined this star could be cooler than others and name it as Ardra !


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The color of a star is what?

The color of a star is its . . . color. In other words, a star's color shows us how white-hot it is. Some stars, like our Sun, are colored slightly in the yellow direction of white-hot. Bigger stars are less yellow and more blue - the bigger, the hotter, the bluer shade of white-hot they are. Red giants, white dwarfs and black holes are something related, but different.


What are the temperature and brightness of stars indicated by?

The temperature of a star is indicated by its color, with blue stars being hotter than red stars. The brightness of a star is indicated by its apparent magnitude, with lower numbers representing brighter stars.


How many Stars visible from earth with the naked eye?

There are approximately 9,096 stars visible from Earth with the naked eye under ideal conditions. This number can vary depending on factors like light pollution, atmospheric conditions, and individual eyesight.


Are giants hotter than white dwarfs?

No, white dwarfs are much hotter than giants. Giants are stars in the later stages of their evolution, while white dwarfs are the remnants of dead stars that have exhausted their nuclear fuel. White dwarfs can have surface temperatures in the tens of thousands of degrees Kelvin, while giants have lower surface temperatures.


Why don't they see hydrogen Balmer lines in the spectra of stars with temperatures of 3200 K?

These stars are so cool that nearly all of the hydrogen atoms are in the ground state. The visible-light Balmer absorption lines of hydrogen are produced by electrons moving from the 1st excited state to a higher orbit. However in M class stars most of the hydrogen is in the ground state, and absorption from the the ground state occurs at ultraviolet wavelengths.

Related Questions

Are hotter stars blue and cooler stars red?

yes


Is the sun hotter or cooler than red and blue stars?

The sun is hotter than red stars but cooler than blue stars,


How are temperature and color in stars linked?

The hotter they are, the bluer they are, the cooler they are, the redder they are.


True or false Red stars are hotter than whittish- blue stars?

False. Blue giants(or hypergiants) are hotter than Red giant stars. White dwarves are also hotter but they are smaller than blue giants. (As is implied by the name.)


Is red stars cold?

No. Red stars emit less energy so they are cooler than hotter blue stars.


Are stars cooler than the sun brighter or dimmer?

Stars can be both cooler and brighter or hotter and dimmer than the Sun, depending on their size and age. Generally, larger and younger stars are hotter and brighter than the Sun, while smaller and older stars can be cooler and dimmer.


Does the color of the star depends on its size?

Yes, the color of a star is determined by its temperature, with hotter stars appearing blue/white and cooler stars appearing red. Generally, larger stars tend to be hotter and appear bluer, while smaller stars are cooler and appear redder.


What does colour of star indicates?

The color of a star indicates its temperature. Blue stars are hotter, while red stars are cooler. This is because hotter stars emit more energy in the blue part of the spectrum, while cooler stars emit more energy in the red part of the spectrum.


What color are cooler stars?

Cooler stars are typically red in color. These stars have lower surface temperatures compared to hotter stars, causing them to emit more red and infrared light.


Which star is hotter red or orange?

Blue stars are the hottest, followed by white stars, then yellow stars like the sun, and lastly red and orange stars which are cooler in temperature.


Why stars vary in color?

Stars vary in color due to differences in their surface temperature. Hotter stars appear blue or white, while cooler stars appear red. This is because the peak wavelength of light emitted by a star is related to its temperature, with hotter stars emitting shorter, bluer wavelengths and cooler stars emitting longer, redder wavelengths.


Is the sun hotter or cooler than most other main-sequence stars?

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