Analysis of radiation pressure effects in pulsating stars through perturbative limit cycle solutions

COSTA, A.; GÓMEZ, D.; FERRO FONTÁN, C.

ASTROPHYSICAL JOURNAL

IOP PUBLISHING LTD

Lugar: Londres; Año: 1991 vol. 373 p. 237 - 245

0004-637X

We investigate the excitation and stability of limit cycle solutions of the one-zone model equations derived by Stellingwerf & Gautschy to demonstrate the usefulness of this approach and to gain understanding of radiation pressure effects on stellar pulsation. We use a perturbative analysis and discuss and compare the advantages of these techniques with the numerical integration of the equations. Interesting comparisons with observational data are found. The relationship of noise effects with irregularities of some types of stars is mentioned.