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On the 75-day cepheid and the envelope of the period-amplitude diagram in M31

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Abstract

On the basis of 30 observations the period of the new cepheid in M31,P=75.487 is obtained. Ths cepheid has an extremely long period and gives a possibility to determine the period-amplitude envelope toward the long-period region in M31 galaxy. A comparison of the period-amplitude diagrams in various galaxies is made.

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Authors and Affiliations

  1. Department of Astronomy, University of Sofia, Bulgaria

    G. R. Ivanov

  2. Sternberg Astronomical Institute, Moscow, USSR

    A. S. Sharov

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  1. G. R. Ivanov
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  2. A. S. Sharov
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Ivanov, G.R., Sharov, A.S. On the 75-day cepheid and the envelope of the period-amplitude diagram in M31. Astrophys Space Sci 124, 329–333 (1986). https://doi.org/10.1007/BF00656044

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  • DOI: https://doi.org/10.1007/BF00656044

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