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Paper: Pulsational Analysis of RR Lyrae Stars
Volume: 349, Astrophysics of Variable Stars
Page: 225
Authors: Di Criscienzo, M.; Marconi, M.; Caputo, F.
Abstract: The results of nonlinear, convective models for RR Lyrae pulsators with various metal contents (Z=0.0001 to 0.006) are presented, and several relations connecting pulsational (period and amplitude of pulsation) and evolutionary (mass, absolute magnitude, color) parameters are derived. These relations, when collated with the average mass of RR Lyrae stars, as suggested by horizontal branch evolutionary models, provide a “pulsational” route to the determination of the distance modulus, both apparent and intrinsic, of RR Lyrae-rich globular clusters.
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