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Radial pulsation among δ Sct stars

  • E. Rodríguez (a1), A. Rolland (a1), P. López de Coca (a1) and S. Martín (a1)

Abstract

It has been pointed out by earlier authors that radial pulsation seems to be the only one type present in high amplitude δ Set stars, at least for monoperiodic stars. In order to confirm or not this point, we have collected all the multicolour data available for these stars in the Strömgren and Johnson photometric systems. Then, the type of pulsation has been analysed on the basis of the phase shifts and amplitude ratios between observed light and colour variations. The results indicate that all the stars analysed are radial pulsators.

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References

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