A nonlinear convective model for radial stellar pulsations. I. The physical description

Details A nonlinear convective model for radial stellar pulsations. I. The physical description A nonlinear convective model for radial stellar pulsations. I. The physical description

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26as..136..217f&link_type=abstract

Astronomy and Astrophysics Supplement, v.136, p.217-226

Astronomy and Astrophysics

Astrophysics

22

Stars: Variables, Hydrodynamics, Stars: Oscillations, Methods: Numerical

Scientific paper

The physical and numerical ingredients of the Vienna nonlinear model for radially pulsating stars are presented. Stellar pulsations are investigated by solving the full system of radiation hydrodynamics including a time-dependent formulation of turbulent convection. The numerical solution method comprises a state-of-the-art adaptive grid algorithm which provides a powerful tool for resolving and tracking the most important ionization zones. Several already published applications to pulsating stars in the classical instability strip demonstrate that the model is able to reproduce important observational properties like RR Lyrae light curves or double mode pulsations.

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