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Q: What are large cool and bright stars called?
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Large bright stars that are fairly cool are called?

Red giants.


What stars are cool and bright stars?

To be bright you need to be hot, close or have a large surface area. The brightest coolest stars are red super giants. They have such a large surface area, that even though their surface temperature is cool - in star terms - their large surface area makes them appear bright.


What are the very bright starts in the upper right of an h-r diagram called?

Hot stars are found in the left hand side of the diagram, cool stars the right, bright stars at the top, and lastly the faint stars are located at the bottom.


What are bright cool stars?

To be bright you need to be hot, close or have a large surface area. The brightest coolest stars are red super giants. They have such a large surface area, that even though their surface temperature is cool - in star terms - their large surface area makes them appear bright.


What color are small cool stars?

The large hot stars are typically called "blue-white" stars or also Blue Giants. Cooler large stars are called Red Giants.


What stars are very bright and very cool?

the ones in the sky


What is the classification for large cool stars?

red giants


What part of the modern H-R diagram do cool bright red stars appear?

top,right


What type of stars has low temperature but high luminosity?

The red giants like Betelgeuse and Antares are bright and - relatively - cool.


What type of stars has high temperature but high luminosity?

The red giants like Betelgeuse and Antares are bright and - relatively - cool.


What type of stars low temperature but high luminosity?

The red giants like Betelgeuse and Antares are bright and - relatively - cool.


What is large cool star formed when a star runs out of hydrogen?

A supergiant or red giant. They are normally around 3,500 degrees C and are very bright, near -5 on the Hertzsprung-Russell Diagram. These are the largest stars in the galaxy and universe.