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On application of multi-colour photometry of δ Scuti stars

Published online by Cambridge University Press:  12 April 2016

J. Daszyńska-Daszkiewicz ,
W.A. Dziembowski  and
A.A. Pamyatnykh
J. Daszyńska-Daszkiewicz
Affiliation:
Astronomical Institute of the Wrocław University, ul. Kopernika 11, 51-622 Wrocław, Poland Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, B-3001 Leuven, Belgium
W.A. Dziembowski
Affiliation:
Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland Warsaw University Observatory, Al. Ujazdowskie 4, Warsaw, Poland
A.A. Pamyatnykh
Affiliation:
Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya Str. 48, 109017 Moscow, Russia Institute of Astronomy, University of Vienna, Türkenschanzstr.17, A-1180 Vienna, Austria

Abstract

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In δ Scuti star models the photometric amplitudes and phases exhibit a strong dependence on convection, which enters through the complex parameter,f, that describes the bolometric flux variation. We present a new method of extracting l and f from multi-colour data and apply it to several δ Scuti stars. The inferred values of f are sufficiently accurate to yield a useful constraint on models of stellar convection.

Type
Part 4. Early-type stars: B, A and F pulsators
Information
International Astronomical Union Colloquium , Volume 193: Variable Stars in the Local Group , 2004 , pp. 255 - 258
Copyright
Copyright © Astronomical Society of the Pacific 2004

References

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