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单词 wolf-rayet star
释义

Wolf-Rayet star


Wolf-Rayet star

(ˈwʊlfˈreɪət) n (Astronomy) any of a small class of very hot intensely luminous stars surrounded by a rapidly expanding envelope of gas[C19: named after Charles Wolf (1827–1918) and Georges Rayet (1839–1906), French astronomers]

Wolf-Rayet star


Wolf-Rayet star:

see spectral classspectral 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.
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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 104-105 times that of the sun; these stars are probably very young and represent an early short-lived stage in stellar evolution.
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