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Radial pulsation among δ Sct stars

Published online by Cambridge University Press:  12 April 2016

E. Rodríguez ,
A. Rolland ,
P. López de Coca  and
S. Martín
E. Rodríguez
Affiliation:
Institute de Astrofísica de Andalucía, CSIC, Apdo. 3004, 18080 Granada, Spain
A. Rolland
Affiliation:
Institute de Astrofísica de Andalucía, CSIC, Apdo. 3004, 18080 Granada, Spain
P. López de Coca
Affiliation:
Institute de Astrofísica de Andalucía, CSIC, Apdo. 3004, 18080 Granada, Spain
S. Martín
Affiliation:
Institute de Astrofísica de Andalucía, CSIC, Apdo. 3004, 18080 Granada, Spain

Abstract

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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.

Type
Part 2. Poster Papers
Information
International Astronomical Union Colloquium , Volume 155: Astrophysical Applications of Stellar Pulsation , 1995 , pp. 329 - 330
Copyright
Copyright © Astronomical Society of the Pacific 1995

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