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Theoretical UBVI Light Curves of Pulsating Stars

Published online by Cambridge University Press:  12 April 2016

Michael U. Feuchtinger  and
Ernst A. Dorfi
Michael U. Feuchtinger
Affiliation:
Physics Department, University of Florida, PO Box 118440, Gainesville, FL 32611, USA
Ernst A. Dorfi
Affiliation:
Institut für Astronomie, Universität Wien, Türkenschanzstraße 17, A-1180 Wien, Austria

Abstract

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By performing detailed frequency-dependent radiative transfer computations we are able to calculate light curves in particular bandpasses from stellar pulsation models calculated by the Vienna nonlinear convective pulsation code. As a sample application we discuss UBVI light curves of RR Lyrae stars. The properties of these light curves are analyzed by means of standard Fourier decomposition, and a comparison to recent observations is performed. As main results we find a good agreement with important observed RR Lyrae properties like pulsation amplitudes and Fourier parameters in B, V, and I bands. Additionally, from the synthetic color curves we derive linear transformation laws between amplitudes as well as Fourier parameters in the different bandpasses.

Type
Part 5. Theoretical Models of Classical Pulsating Stars
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 334 - 337
Copyright
Copyright © Astronomical Society of the Pacific 2000

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