| 单词 | star streaming |
| 释义 | > as lemmasstar streaming star streaming n. Astronomy the phenomenon (explained by galactic rotation) by which stars in the Milky Way Galaxy tend broadly to have proper motions in one or other of two opposite directions, thus falling into two intermingled groups or streams; cf. star stream n. (b). ΘΚΠ the world > the universe > star > stellar motion > [noun] proper motion1561 star drift1829 star stream1844 motus peculiaris1890 star streaming1905 drift1906 1905 Times 18 Aug. 4/2 Professor Kapteyn, director of the astronomical laboratory of the University of Groningen..read a paper entitled ‘On Star Streaming’. 1919 J. H. Jeans Probl. Cosmogony & Stellar Dynamics x. 240 As we believe that there is correlation between spectral type and mass, there ought also to be correlation between spectral type and star-streaming, in the sense of M-type stars shewing star-streaming least. 1979 K. R. Lang & O. Gingerich Source Bk. Astron. & Astrophysics lxxvii. 514 Karl Schwarzschild showed that it was unnecessary to think of two star streams and that the phenomenon of star streaming could be explained by assuming that the individual motions of the stars are distributed in an ellipsoid with the long axis in the direction of motion of Kapteyn's two star streams. 2004 G. Wise Civic Astron. vi. 118 Star streaming was perhaps the greatest discovery by Kapteyn, one of the great astronomers of modern times. < as lemmas |
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