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BookmarkA Cepheid variable or Cepheid is a member of a particular class of variable stars, notable for a fairly tight correlation between their period of variability and absolute luminosity.
Since the period-luminosity relation can be calibrated with great precision using the nearest Cepheid stars, the distances found with this method are among the most accurate available..
For more information about the topic Cepheid variable, read the full article at Wikipedia.org, or see the following related articles:
Supergiant — Supergiants are the most massive stars. Supergiants can have masses from 10 to 70 solar masses and brightness from 30,000 up to hundreds of thousands ... > read more
Red giant — A red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giant stars. ... > read more
Luminosity — In general physics, luminosity (more properly called luminance) is the density of luminous intensity in a given ... > read more
Star cluster — Star clusters are groups of stars which are gravitationally bound. Two distinct types of star cluster can be distinguished: globular clusters are ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Cepheid variable at Wikipedia.org. See the Wikipedia copyright page for more details.
