THE STABILITY OF CEPHEID PULSATIONS

Автор(и)

  • D. G. Turner Department of Astronomy and Physics, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada, Canada
  • L. N. Berdnikov Sternberg Astronomical Institute and Isaac Newton Institute of Chile, Moscow Branch,13 Universitetskij prosp., Moscow 119899, Russia, Russian Federation

DOI:

https://doi.org/10.18524/1810-4215.2001.14.99502

Ключові слова:

Stars, variable, pulsating, Cepheids.

Анотація

Analyses of Cepheid period changes using O-C diagrams are used to establish the direction of evolution of individual stars through the instability strip. The superposition of random in period on O-C data is less easy to interpret. Such chaotic behavior is a standard feature of Mira and RV Tauri variables according to the work of Percy, but has not been examined in detail for Cepheids. Unlike the situation for cooler classes of pulsators, most Cepheids do not exhibit random in period. Binarity plays only a minor role in the scatter in O-C data.

Посилання

Berdnikov L.N.: 1994, Astron. Lett, 20, 232.

Berdnikov L.N., Pastukhova E.N.: 1995, Astron. Lett, 21, 369.

Berdnikov L.N., Ignatova V.V., Pastukhova, E. N., Turner, D. G.: 1997, Astron. Lett, 23, 177.

Berdnikov, L. N., Ignatova, V. V., Caldwell, J. A. R., Koen, C: 2000, New Astronomy, 4, 625.

Denissenkov, P. A.: 1994, Astron. Astrophys., 287, 113.

Eddington, A. S., Plakidis, S.: 1929, M.N.R.A.S., 90, 65.

Luck, R. E.: 1994, Ap. J. Suppl, 91, 309.

Luck, R. E., Lambert, D. L.: 1981, Ap. J., 245, 1018.

Luck, R. E., Kovtyukh, V. V., Andrievsky, S. M.: 2001, Astron. Astrophys., 373, 589.

Percy, J. R.: 2001, private communication.

Percy, J. R., Hale, J.: 1998, Pub. A.S.P., 110, 1428.

Percy, J. R., Colivas, T.: 1999, Pub. A.S.P., 111, 94.

Percy, J. R., Bezuhly, M., Milanowski, M., Zsoldos, E.: 1997, Pub. A.S.P., 109, 264.

Sasselov, D. D.: 1986, Pub. A.S.P., 98, 561.

Turner, D. G., Horsford, A. J., MacMillan, J. D.: 1999, J.A.A.V.S.O., 27, 5.

Turner, D. G., Billings, G. W., Berdnikov, L. N.: 2001, Pub. A.S.P., 113, 715.

##submission.downloads##

Опубліковано

2017-04-20

Номер

Розділ

Статті