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Classical Cepheid variable

space Maturity 5-7

Some stars change their light.

Delta Cephei lightcurve.jpg
Delta Cephei lightcurve.jpg
They get bright and then dim. This happens in a rhythm. It can take days or weeks. These stars help us find space. They show us how far things are. Can you look for them?
Period-Luminosity Relation for Cepheids.png
Period-Luminosity Relation for Cepheids.png

47 words
🖼️ Images & Media (6)
File:HR-vartype.svg
HR-vartype.svg
File:Evolutionary track 5m.svg
Evolutionary track 5m.svg
File:Delta Cephei lightcurve.jpg
Delta Cephei lightcurve.jpg
File:Delta cephei ubvri engle 2014.png
Delta cephei ubvri engle 2014.png
File:PSM V69 D184 Light curves of variable stars.png
PSM V69 D184 Light curves of variable stars.png
File:Period-Luminosity Relation for Cepheids.png
Period-Luminosity Relation for Cepheids.png
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📚 Content adapted from Wikipedia | Readability: FK 11.4 | Vital Level 5