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A search for evolutionary period variations of Cepheids using the Harvard plate stacks: FF Aql

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Abstract

Photographic plates of the Harvard Observatory stacks have been used to obtain 1261 brightness estimates for the low-amplitude Cepheid FF Aql (P = 4.47 days). Combined with published visual, photoelectric, and CCD observations, these data enable the construction of an O-C diagram spanning 122 years. The resulting O-C diagram is parabola-shaped, enabling the determination of quadratic brightness elements for the first time. The evolutionary rate of increase of the period, dP/dt = 0.072 ± 0.011 s/year, is in agreement with theoretical computations for the third crossing of the instability strip. The available data, reduced using the technique of by Eddington and Plakidis, reveal the presence of small, random period fluctuations, ɛ = 0.0061d ± 0.0044d, that do not distort the evolutionary trend of the O-C residuals.

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References

  1. D. G. Turner, M. Abdel-Sabour Abdel-Latif, and L. N. Berdnikov, Publ. Astron. Soc. Pacif. 118, 410 (2006).

    Article  ADS  Google Scholar 

  2. E. Hertzsprung, Astron. Nachr. 210, 17 (1919).

    Article  ADS  Google Scholar 

  3. L. N. Berdnikov, Sov. Astron. Lett. 18, 207 (1992).

    ADS  Google Scholar 

  4. A. S. Eddington and S. Plakidis, Mon. Not. R. Astron. Soc. 90, 65 (1929).

    ADS  MATH  Google Scholar 

  5. J. Stebbins, Popular Astron. 37, 156 (1929).

    Google Scholar 

  6. C. M. Huffer, Publ. Washburn Observ. 15, 205 (1931).

    Google Scholar 

  7. L. Szabados, Comm. Konkoly Observ. Hungarian Acad. Sci., No. 70, 92 (1977).

    Google Scholar 

  8. L. Szabados, Comm. Konkoly Observ. Hungarian Acad. Sci., No. 96, 132 (1991).

    Google Scholar 

  9. L. N. Berdnikov and E. N. Pastukhova, Astron. Lett. 20, 479 (1994).

    ADS  Google Scholar 

  10. L. N. Berdnikov, V. V. Ignatova, E. N. Pastukhova, and D. G. Turner, Astron. Lett. 23, 177 (1997).

    ADS  Google Scholar 

  11. D. Bersier, Astrophys. J. Suppl. Ser. 140, 465 (2002).

    Article  ADS  Google Scholar 

  12. A. Arellano Ferro, E. Rojo Arellano, S. Gonzales-Bedolla, and P. Rozenzweig, Astron. Astrophys. Suppl. Ser. 117, 167 (1998).

    Article  Google Scholar 

  13. L. L. Kiss, J. Astron. Data 4(3) (1998).

    Google Scholar 

  14. L. N. Berdnikov, V. V. Ignatova, and O. V. Vozyakova, Astron. Astrophys. Trans. 17, 87 (1998).

    Article  ADS  Google Scholar 

  15. V. V. Ignatova and O. V. Vozyakova, Astron. Astrophys. Trans. 19, 133 (2000).

    Article  ADS  Google Scholar 

  16. The Hipparcos and Tycho Catalogues, ESA SP-1200 (ESA, Noordwijk, 1997).

  17. G. Pojmanski, Acta Astron. 52, 397 (2002).

    ADS  Google Scholar 

  18. AAVSO International Database. http://www.aavso.org/aavso-international-database.

  19. B. V. Kukarkin, Tr.Gos.Astron. Inst. Shternberga 13, 118 (1940).

    ADS  Google Scholar 

  20. M. S. Zverev, Tr. Gos. Astron. Inst. Shternberga 8, 1 (1936).

    ADS  Google Scholar 

  21. E. Loreta, Gazette Astron. Anvers 20, 85 (1933).

    ADS  Google Scholar 

  22. S. M. Selivanov, Perem. Zvezdy 5, 21 (1935).

    Google Scholar 

  23. C. Krebs, Astron. Nachr. 257, 113 (1935).

    Article  ADS  Google Scholar 

  24. W. Dziewulski, Bull. Astron. Observ. Torun, No. 30, 27 (1962).

    Google Scholar 

  25. O. J. Eggen, Astrophys. J. 113, 367 (1951).

    Article  ADS  Google Scholar 

  26. Th. Walraven, A. B. Mueller, and P. Th. Oosterhoff, Bull. Astron. Inst. Netherl. 14, 81 (1958).

    ADS  Google Scholar 

  27. R. I. Mitchell, B. Iriarte, D. Steinmetz, and H. L. Johnson, Bol. Observ. Tonantzintla Tacubaya 3, 153 (1964).

    ADS  Google Scholar 

  28. W. Z. Wisniewski and H. L. Johnson, Comm. Lunar Planet. Lab. 7, 57 (1968).

    ADS  Google Scholar 

  29. K. A. Feltz and D. H. McNamara, Publ. Astron. Soc. Pacif. 92, 609 (1980).

    Article  ADS  Google Scholar 

  30. J. M. Pel, Astron. Astrophys. Suppl. Ser. 24, 413 (1976).

    ADS  Google Scholar 

  31. T. J. Moffett and T. G. Barnes, Astrophys. J. Suppl. Ser. 55, 389 (1984).

    Article  ADS  Google Scholar 

  32. L. Szabados, Comm. Konkoly Observ. Hungarian Acad. Sci., No. 96, 125 (1991).

    Google Scholar 

  33. A. Arellano Ferro, Mon. Not. R. Astron. Soc. 209, 481 (1984).

    ADS  Google Scholar 

  34. A. Arellano Ferro, L. Parrao, W. Schuster, and S. Gonzales-Bedolla, Astron. Astrophys. Suppl. Ser. 83, 225 (1990).

    ADS  Google Scholar 

  35. I. A. Usenko, Comm. 27 IAU Inform. Bull. Var. Stars, No. 3519, 1 (1990).

    Google Scholar 

  36. L. N. Berdnikov, Astron. Lett. 19, 84 (1993).

    ADS  Google Scholar 

  37. L. N. Berdnikov and O. V. Vozyakova, Astron. Lett. 21, 396 (1995).

    Google Scholar 

  38. L. N. Berdnikov and D. G. Turner, Astron. Lett. 21, 717 (1995).

    ADS  Google Scholar 

  39. L. N. Berdnikov, V. V. Ignatova, and O. V. Vozyakova, Astron. Astrophys. Trans. 14, 237 (1997).

    Article  ADS  Google Scholar 

  40. D.G. Turner, J. R. Percy, T. Colivas, L.N. Berdnikov, and M. Abdel-Sabour Abdel-Latif, AIP Conf. Ser. 1170, 167 (2009).

    Article  ADS  Google Scholar 

  41. L. N. Berdnikov and I. R. Stevens, in Variable Stars, the Galactic Halo and Galaxy Formation (Sternberg Astronomical Institute, Moscow, 2010), p. 207.

    Google Scholar 

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Correspondence to L. N. Berdnikov.

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Original Russian Text © L.N. Berdnikov, D.G. Turner, A.A. Henden, 2014, published in Astronomicheskii Zhurnal, 2014, Vol. 91, No. 4, pp. 299–307.

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Berdnikov, L.N., Turner, D.G. & Henden, A.A. A search for evolutionary period variations of Cepheids using the Harvard plate stacks: FF Aql. Astron. Rep. 58, 240–248 (2014). https://doi.org/10.1134/S1063772914040015

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