Ref: ASTROimport-809

Spectral separation of two pulsating non-single stars.

Frémat, Y. ; Lampens, P. ; Alecian, E. ; Balona, L. ; Catala, C. ; Goupil, M.-J. ; Torres, G. ; Škoda, P.

published in Memorie della Societa Astronomica Italiana, 77, pp. 521 (2006)

Abstract: theta 2 Tau and RS Cha are 2 binary systems also showing delta Scuti-type pulsations. theta 2 Tau is a Hyades "single-lined" spectroscopic binary with an orbital period of 140.7 days. Its secondary component, though of similar temperature, is less evolved and fainter than the primary and is therefore difficult to detect spectroscopically. RS Cha is a double-lined pre-main-sequence eclipsing spectroscopic binary orbiting with a short 1.7 days period. Since both systems address several interesting issues related to stellar evolution, metallicism, binarity and pulsation, we explore in the present contribution the possibility to study their spectra using the Fourier disentangling technique developed by \citet{1995A} for extraction of reliable and accurate component properties.

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Royal Observatory of Belgium > Astronomy & Astrophysics
Science Articles > Non-refereed Articles

 Record created 2016-07-01, last modified 2016-07-01