“Cepheid”的英文意思_释义_用法

单词

Cepheid

释义

Cepheid, a. and n. Astr.|ˈsɛfɪɪd, ˈsiːfɪɪd|
Also cepheid.
[f. L. Cēpheus, Gr. κηϕεύς Cepheus, a mythical king whose name was given to a constellation + -id².]
A. adj. Pertaining to or resembling the variable star δ Cephei.
B. n. A variable star of the type of δ Cephei.
1904Astrophysical Jrnl. XX. 184 Spectroscopic studies of Cepheid variables.1921Discovery Feb. 38/1 To determine the absolute magnitude..of every Cepheid variable in the heavens.1927Glasgow Herald 7 Oct. 11/2 When a Cepheid's period was noted its brightness could be stated.1927A. S. Eddington Stars & Atoms 93 In 1924 Hubble discovered a number of Cepheid variables in the great Andromeda nebula.1964Yearbk. Astr. 1965 149 It has been found that the longer the period of a Cepheid, the greater its real luminosity. If one knows how bright a star really is and how bright it appears, one can at once deduce its distance. Cepheids therefore act as standard candles among the stars.

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