Abstract
THIS volume is published as a memorial to Prof. F. P. Leavenworth, who died in 1928. It contains the annual means of his observations of 1185 double stars, made between 1886 and 1927. They were made chiefly with the 10½-inch refractor of the University of Minnesota, but some were made at Yerkes, Haverford College, Leander McCormick, and Goodsell Observatories. Many stars that show motion have been followed regularly; thus Castor (AB) was observed forty-five times during an interval of thirty-nine years; the distant companion C was also observed five times; there are forty-six observations of Sirius, and seven of Antares, which shows no appreciable change of distance or angle in forty years.
Measures of Double Stars.
By Prof. Francis P. Leavenworth. With which are included the Measures by William O. Beal. (Publications of the Astronomical Observatory, University of Minnesota, Vol. 1.) Pp. viii + 111. (Minneapolis: University of Minnesota Press, 1930.) 5 dollars.
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D. C., A. Measures of Double Stars . Nature 128, 743 (1931). https://doi.org/10.1038/128743b0
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DOI: https://doi.org/10.1038/128743b0