Abstract
VARIABLE STARS.—As many of the ephemerides of these stars that were formerly available are discontinued or inaccessible owing to the war, M. Luizet has prepared a useful set of ephemerides for 1917, which is published in the Journal des Observateurs (vol. ii., No. 8). It comprises 124 stars of the Algol type, 18 stars of the β Lyræ type, and 33 stars of the δ Cephei type; the period and date of first minimum (or maximum) in each month of 1917 are given, and other data, which make it easy to calculate intermediate minima or to extend the ephemerides to 1918 or later. The lists are practically confined to stars visible in European latitudes.
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Our Astronomical Column . Nature 101, 511–512 (1918). https://doi.org/10.1038/101511a0
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DOI: https://doi.org/10.1038/101511a0