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Metal Rich RR Lyrae Variables: I. The Evolutionary Scenario
Giuseppe Bono, Filippina Caputo, Santi Cassisi +2
This paper presents evolutionary computations which investigate the theoretical predictions concerning metal rich RR Lyrae pulsators found both in the Galactic field and in the Gal…
Double-mode RR Lyrae Variables: Pulsational Masses Revisited
Giuseppe Bono, Filippina Caputo, Vittorio Castellani +1
Double-mode RR Lyrae variables (i.e. radial variables which are simultaneously pulsating in both fundamental and first overtone modes) appear a fundamental tool for investigating t…
Second Overtone Pulsators Among Delta Scuti Stars
Giuseppe Bono, Filippina Caputo, Santi Cassisi +3
We investigate the modal stability of stellar models at masses and luminosity levels corresponding to post main sequence luminous delta scuti pulsators. The envelope models have be…
Metallicity Effects on RR Lyrae Variables
G. Bono, R. Incerpi, M. Marconi
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. Nonline…