Pulsational Analysis of RR Lyrae Stars

Details Pulsational Analysis of RR Lyrae Stars Pulsational Analysis of RR Lyrae Stars

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..349..225d&link_type=abstract

Astrophysics of Variable Stars, Pecs, Hungary, 5-10 September 2005, Sterken, C. and Aerts, C. (eds). ASP Conference Series, Vol.

Astronomy and Astrophysics

Astrophysics

Scientific paper

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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