Luminosity Variation in the Extended One-Zone RR Lyrae Model

Details Luminosity Variation in the Extended One-Zone RR Lyrae Model Luminosity Variation in the Extended One-Zone RR Lyrae Model

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005seraj.170...57p&link_type=abstract

Serbian Astronomical Journal (http://saj.matf.bg.ac.yu/)

Astronomy and Astrophysics

Astronomy

Stars: Variables: Rr Lyr, Stars: Interiors

Scientific paper

The Stellingwerf one-zone stellar model is extended by assuming, a slow and uniform rotation that leads to a very small oblateness of the star. The matter in the core-surrounding shell is suposed to consists of a mixture of ideal gas and radiation. This one-zone stellar pulsation model is proposed as a tool to investigate the factors affecting luminosity variations of pulsating stars. Linear and non-linear analyses of the resulting equations are described. The results are in very good agreement with the observed RR Lyrae light curves.

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