| 单词 | white dwarf |
| 释义 | > as lemmaswhite dwarf white dwarf n. Astronomy a small, faint, very dense star, usually but not necessarily white in colour, which lies below the main sequence and represents the stable phase assumed by stars which have less than 1.4 solar masses when their nuclear reactions cease.Not regarded as a true dwarf star: cf. quot. 1978 and dwarf n. 2c. ΘΚΠ the world > the universe > star > kind of star > small star > [noun] > white dwarf white dwarf1922 1922 Publ. Astron. Soc. Pacific 34 357 The second star is classified as A0 in the Henry Draper Catalogue and in consideration of the proper motion and apparent magnitude it is probable that the star is a white dwarf. 1978 J. M. Pasachoff & M. L. Kutner University Astron. x. 283 Do not confuse the term ‘white dwarf’ with the term ‘dwarf’. The former refers to the dead hulks of stars.., while the latter refers to normal stars on the main sequence. 2010 N.Y. Times (National ed.) 23 Feb. d3/5 Accreting white dwarfs go off at a precisely determined mass known as the Chandrasekhar limit, but a pair of colliding dwarfs could have a range of masses. < as lemmas |
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