COMPARATIVE ANALYSIS OF PHYSICAL PARAMETERS OF RR LYRAE

Автор(и)

  • Yu. S. Romanov Astronomical Observatory, Odessa State University, T.G.Shevchenko Park, Odessa 270014, Ukraine, Україна
  • N. S. Zgonyaiko Astronomical Observatory, Odessa State University, T.G.Shevchenko Park, Odessa 270014, Ukraine, Україна
  • S. V. Vasilyeva Astronomical Observatory, Odessa State University, T.G.Shevchenko Park, Odessa 270014, Ukraine, Україна

DOI:

https://doi.org/10.18524/1810-4215.1994.7.105768

Ключові слова:

Stars, Variables, Atmospheres of-stars, Star, Individual, RR Lyrae

Анотація

For analysis of spectral observations of RR Lyrae obtained by Butler in 1974 with a dispersion of 8 Å/mm, a two-component "curve-of-growth" method is used which has been developed at the Odessa Astronomical Observatory. As a result, a number of physical parameters are obtained as well as their phase variations: temperature, spectral type, electron pressure, turbulent velocity. Parameters of Tex and lg Pe have proved to be somewhat higher than the values found by Butler and correspond to the B9.1 - F0.9 range typical of this stellar spectral type.

Посилання

Butler D.: 1974, Lick Observ. Bull., Board of Studies in As. & Ap., 693,1.

Butler D.: 1975, Ap.J., 200, 68.

Fenina Z.N., Zgonyaiko N.S.: 1992.-In: "Stellar magnetism, International Conference Proceedings", S.Peterburg, 234.

Kholopov P.N. et al. Gen. Catal. Var. Stars, Moscow, 1985, 1.

Romanov Yu.S., Fenina Z.N., Vasilyeva S.V.: 1981, Astrometriya i Astrofizika (Kiev), 43, 43.

Romanov Yu.S., Zgonyaiko N. S.: 1991, Preprint UkrNIINTI, 1057.

Romanov Yu.S., Zgonyaiko N. S., Vasilyeva S. V.: 1993, Peremenye zvezdy (in press).

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2017-07-01

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