Ref: ASTROimport-825

Pulsating components in multiple systems

Lampens, P. ; Frémat, Y. ; Uytterhoeven, K. ; Cuypers, J.

published in Tidal Evolution and Oscillations in Binary Stars, 333, pp. 149 (2005)

Abstract: Two interesting case studies of pulsating components in triple systems are highlighted in this presentation. We first report on the new results of a detailed study of the double-lined spectroscopic-visual system DG Leonis based on recent photometric and high-resolution spectroscopic data. This triple system has two components showing mild Am abundance peculiarities and at least one pulsating component of the type δ Scuti. In the second case we report on the new results obtained for the single-lined spectroscopic-visual triple system λ Scorpii. A careful spectroscopic analysis allowed to detect the presence of four pulsation frequencies, the most dominant of which was shown to be subject to the light-time effect. None of these frequencies are likely to be excited by tidal interaction.

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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