Concepedia

Long Secondary Periods in Pulsating Asymptotic Giant Branch Stars: An Investigation of Their Origin

P. R. Wood, E. A. Olivier, S. D. Kawaler

The Astrophysical Journal · 2004 · 147 citations · 31 references

Concepts

Natural SciencesAstronomyPhysicsAstrophysicsObservational AstronomyStellar AstronomyPulsating StarsRed GiantsStellar RotationStellar StructureAsymptotic Giant Branch Mass LossAsymptotic Giant Branch StarsPulsation PeriodsRadial Velocity VariabilityRadial Velocity VariationsRed Giant Branch StarsRed Giant StarsStellar Pulsations

Abstract

Approximately 25%-30% of pulsating asymptotic giant branch (AGB) stars show long secondary periods (LSPs) of typical length ∼400-1500 days, roughly 10 times longer than the primary period of pulsation. Here we seek an explanation for the LSPs. We descri