Hydrodynamic Models of Classical Cepheids. : I. A Technique to Search the Limiting-amplitude Oscillation

Abstract

The limiting-amplitude of hydrodynamic models for cepheid variables is searched by checking the intrinsic growth-rate of the oscillation derived by the pumping-up. The procedure is scarcely affected by the initial values. The modulation of oscillation appeared at the earlier stage may be enhanced by the overtones in resonance