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Wolf-Rayet star |
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Wolf-Rayet star: see spectral class spectral class, in astronomy, a classification of the stars by their spectrum and luminosity . In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically. ..... Click the link for more information. . Wolf-Rayet star [¦vȯlf rī¦ā ‚stär] (astronomy) A member of a class of very hot stars (100,000-35,000 K) which characteristically show broad bright emission lines in their spectra; luminosities are high, probably in the range 104-105times that of the sun; these stars are probably very young and represent an early short-lived stage in stellar evolution. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Before exploding, these stars, then known as Wolf-Rayet stars, have lost their outer atmosphere and slimmed down to a mere 10 to 20 times the mass of the sun. 328) states that star BAT99-2 "is the hottest Wolf-Rayet star known, with a surface temperature of 120,000 kelvins. The star is the hottest Wolf-Rayet star known, with a surface temperature of 120,O00 kelvins, nearly 20 times that of the sun. |
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