RR Lyrae Distance Scale: Theory and Observations

  title={RR Lyrae Distance Scale: Theory and Observations},
  author={Giuseppe Bono},
  journal={arXiv: Astrophysics},
  • G. Bono
  • Published 7 May 2003
  • Physics
  • arXiv: Astrophysics
The RR Lyrae distance scale is reviewed. In particular, we discuss theoretical and empirical methods currently adopted in the literature. Moreover, we also outline pros and cons of optical and near-infrared mean magnitudes to overcome some of the problems currently affecting RR Lyrae distances. The importance of the K-band Period-Luminosity-Metallicity (PLZ K ) relation for RR Lyrae is also discussed, together with the absolute calibration of the zero-point. We also mention some preliminary… 
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RR Lyrae stars: prime calibrators of the first rung of the distance ladder
  • C. Cacciari
  • Physics
    Proceedings of the International Astronomical Union
  • 2012
Abstract RR Lyrae variables are the primary standard candles for old stellar populations, and the traditional first step in the definition of the distance scale. Their properties are known on the


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