The Blazhko effect is a long-term, generally irregular modulation of the light curves that
occurs in a sizeable number of RR Lyrae stars. The physical origin of the effect has been a …

Context. Radial velocity (RV) curves of Classical Cepheids allow precise determination of
the resonant periods, which in turn help to constrain fundamental parameters of these stars …

Resonances or near resonances are ubiquitous among the excited nonradial pulsation
modes of variable stars and they must play an important role in determining their pulsational …

The nonlinear pulsational behavior of several sequences of state-of-the-art Cepheid models
is computed with a numerical hydrodynamics code. These sequences exhibit period …

Context. Estimating the metallicity of classical Cepheids is of prime importance for studying
metallicity effects on stellar evolution and the chemical evolution of galaxies, as well as on …

We apply the amplitude equation formalism to the study of the nonlinear behavior of the
amplitudes of triplets of modes in pulsating stars. We show that, even when they remain …

The periodical nonlinear behavior of a number of sequences of radiative Cepheid models is
computed and Fourier analyzed. The Fourier phases and amplitudes exhibit systematic and …

We present hydrodynamic BL Herculis type models which display a long-term modulation of
pulsation amplitudes and phases. The modulation is either strictly periodic or quasi-periodic …

The linear and nonlinear pulsational behavior of nine sequences of BL Herculis models is
studied, and their radial velocity curves are discussed in detail. The pulsations of these stars …

The effects of a 2:1 resonance in nonlinear radial stellar pulsations ADS Classic is now
deprecated. It will be completely retired in October 2019. This page will automatically redirect to …