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What are some properties of red giant stars?

Answer 1

Levi Anderson

Properties of Red Giant Star are given below :-

Intermediate layer of the star consists mainly of Helium.
Outer envelope of the star consists mainly of Hydrogen.
Surface temperature of the star is about 3500 degree Celsius.
The temperature of the Carbon Core is about 100 million degree Celsius.

This is a pic of Red Giant Star comparing it to the size of our Sun.

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Answer 2

Elena Antonova

Red giant stars have a number of characteristics, such as being evolved stars in the later stages of stellar evolution, having used up all of their core hydrogen fuel and expanding and cooling as a result. They are also typically much larger than main sequence stars, with radii ranging from tens to hundreds of times that of the Sun. Red giants have lower surface temperatures than main sequence stars, emitting light primarily in the red to orange region of the spectrum, having relatively low surface gravities, and sometimes pulsating, which causes their brightness to vary over time. Finally, red giants are frequently found in older stellar populations, such as globular clusters and the bulges of galaxies.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.