Science Fair Project Encyclopedia
W Virginis variable
A W Virginis variable is a variable star similar to a Cepheid variable.
W Virginis are different because they are population II stars, and so have a lower mass (less than our Sun), and lower metallicity.
Their luminosity is, on average, about 1.5 magnitudes less than classical Cepheids. The period varies between 1 and 60 days.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details