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  • V379 Cep: a System of Two Binaries

  • P. Mayer, P. Harmanec, H. Božić, P. Eenens, E.F. Guinan, G. McCook, P. Koubský, D. Ruždjak, D. Sudar, M. Šlechta, M. Wolf, S. Yang
  • Journal:
    Proceedings of the International Astronomical Union / Volume 2 / Issue S240 / August 2006
    Published online by Cambridge University Press:
    09 August 2007, pp. 499-502
    Print publication:
    August 2006
    • Article
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  • We obtained new series of electronic spectra and UBV photometry of V379 Cep and analyzed them in an effort to check whether the conclusion about its anomalous masses is not premature. We found that the second system of spectral lines seen in the spectra of V379 Cep does not belong to the secondary but to the primary of another binary Ba+Bb (orbital period of 159d0) which constitutes a quadruple system with the narrow-lined 99d76 eclipsing binary Aa+Ab (for which we report probable detection of the secondary and derive improved period and orbital elements). The mutual motion of the two binaries A+B around the common centre of gravity is also observable and the probable orbital period is some 7878 days. Our result shows that the components Aa and Ba are somewhat evolved but removes the reported discrepancy of anomalously small masses. We find that V379 Cep is an astrophysically interesting quadruple system for which a future combination of interferometry, spectroscopy and photometry can provide individual masses of all four bodies.