Abstract
A NEW VARIABLE STAR OF THE ALGOL TYPE.—Dr. E. Hartwig announced in the middle of September that the star B.D. + 15°˙3311 (R.A. 17h. 53m. 36s., Decl. + 15°8′ 47″˙2, 1900) was a variable of the Algol type. He afterwards determined the period to be 3d. 23h. 49m. 32s. 7. (Astro. Nach. 3260). It appears, however, that Dr. S. C. Chandler discovered the character of the star's variability at the end of July, and communicated his discovery to several other observers, who confirmed it. The star was assigned the notation 6442 Z. Hercules about the middle of August, the period having previously been determined as 3d. 23h. 50m. Prof. Dunér has found that the minima follow each other at unequal intervals of forty-seven and forty-nine hours. There appears to be a secondary minimum which occurs a few hours previous to the time midway between two successive primary minima.
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Our Astronomical Column. Nature 51, 64 (1894). https://doi.org/10.1038/051064a0
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DOI: https://doi.org/10.1038/051064a0