view Abstract Citations (100) References (56) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Regular and Irregular Nonlinear Pulsations in Population II Cepheid Models Kovacs, Geza ; Buchler, J. Robert Abstract Linear and nonlinear pulsational properties of radiative stellar models relevant for W Vir, RV Tau, and yellow semiregular variables are surveyed. Masses and luminosities range from 0.4 - 0.8 M_sun; and 200 - 1000 L_sun; respectively. The chemical composition is fixed to X = 0.745, Z = 0.005. Three types of pulsational behavior occur (1) singly periodic pulsations (limit cycles) with a radius variation of one maximum (or minimum) per period which are called regular limit cycles, (2) limit cycles with 2, 4, 8, ... maxima (minima) per repetition period which are called period doubled limit cycles, (3) irregular pulsations which are chaotic in the sense of dynamical systems analysis. Publication: The Astrophysical Journal Pub Date: November 1988 DOI: 10.1086/166890 Bibcode: 1988ApJ...334..971K Keywords: Cepheid Variables; Semiregular Variable Stars; Stellar Mass; Stellar Models; Stellar Oscillations; Chemical Composition; Mass To Light Ratios; Stellar Luminosity; Stellar Structure; Astrophysics; STARS: CEPHEIDS; STARS: POPULATION II; STARS: PULSATION; STARS: RV TAURI; STARS: SEMIREGULAR VARIABLES full text sources ADS | data products SIMBAD (3)