RR Lyrae - Theory vs Observation

Abstract

The luminosities, effective temperatures and metallicities that are derived empirically by Kovacs and Jurcsik from the light curves of a large number of globular cluster and field RRab and RRc stars are compared to theoretical RR Lyrae models. The strong luminosity dependence of the empirical blue and red edges (Log L vs Log Teff diagram) is in disagreement with that of both radiative and convective models. A reexamination of the theoretical uncertainties in the modelling leads us to conclude that the disagreement is irreconcilable.

6 pages, 5 figures (revised april 2000, revisions relatively minor)

References in corpus (2)

• Turbulent Convection in the Classical Variable Stars
• Nonlinear Pulsations of Convective Stellar Models

Cited by in corpus (9)

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• Hydrodynamical Survey of First Overtone Cepheids
• Mode Switching Time Scales in the Classical Variable Stars
• Period-colour and amplitude-colour relations in classical Cepheid variables II: the Galactic Cepheid model
• M75, a Globular Cluster with a Trimodal Horizontal Branch. II. BV Photometry of the RR Lyrae Variables
• Radial Stellar Pulsation and Three-Dimensional Convection. II. Two-Dimensional Convection In Full Amplitude Radial Pulsation
• A variable star survey of the open cluster M37
• The outer-halo globular cluster NGC 6229. IV. Variable stars