Abstract
δ CEPHEI.—Further particulars of Dr. Belopolsky's spectro-scopic study of this variable star (NATURE, November 1, 1894, p. 21) are given in the Bulletin of the St. Petersburg Academy of Sciences, November, 1894, and some of his numerical results are slightly changed. He has shown for the first time that orbital movement is as closely associated with this class of short-period variable stars as with those of the Algol class, in which the minima are produced by eclipses. Although the spectrum of δ Cephei is described as of Vogel's Class 11. α, it is pointed out that it differs from that of the sun in many respects, some of the lines which are narrow and feeble in the sun being strong in the star, and vice versa. There does not appear to be any change in the character of the spectrum, other than a variation of intensity, as the light of the star changes.
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Our Astronomical Column. Nature 51, 282 (1895). https://doi.org/10.1038/051282a0
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DOI: https://doi.org/10.1038/051282a0