Metallicity Effects on RR Lyrae Variables

Details Metallicity Effects on RR Lyrae Variables Metallicity Effects on RR Lyrae Variables

1996-05-23

arxiv.org/abs/astro-ph/9605143v1

Astronomy and Astrophysics

Astrophysics

postscript file of 14 pages and 4 figures; for any problem please write to bono@oat.ts.astro.it

Scientific paper

10.1086/310207

The effects of heavy elements abundance on theoretical observables is studied for both fundamental and first overtone RR Lyrae pulsators at fixed mass and luminosity level. Nonlinear models have been computed adopting three different metal content. It has been found that the bolometric amplitude of first overtone pulsators decreases as metallicity increases, whereas for fundamental pulsators the amplitude is positively correlated with the metal abundance.

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