Questions tagged [cepheids]

Use when your question is specifically about Cepheid variables.

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How do we know that the intrinsic brightness of Cepheid variables corresponds to their period?

As I understand it, beyond parallax the next way of estimating the distance to astronomical objects is by using a relationship between the period and intrinsic luminosity of Cepheid variables. How do ...
2
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Distance of extra-galactic Classical Cepheids

There have been many questions and answers about finding the distance of a star from the earth. But as I did some research on the net, I found that we have specific approaches for finding the ...
2
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How does the cepheid variables help in finding distance

How did Edwin Hubble find distances using Cepheid variables as 'standard candles'?
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How does the Hubble Space Telescope “Drift and Shift”?

The Phys.org article Mystery of the universe's expansion rate widens with new Hubble data says: Astronomers have been using Cepheid variables as cosmic yardsticks to gauge nearby intergalactic ...