Why are cepheid variables important?

Answer 1

They are used as standard candles to measure distances in space. to stars.

Cepheids have a characteristic that enables astronomers to use them as standard candles to measure distances to stars: a relationship between their luminosity and pulsation time.

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Answer 2

Cepheid variables are valuable standard candles for determining cosmic distances because of their intrinsic luminosity, which is directly correlated with their pulsation period. This makes cepheids an essential tool for calibrating the cosmic distance ladder and comprehending the scale of the universe. Moreover, research on cepheids sheds light on stellar evolution and the dynamics 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.

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.

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.

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.

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