RR Lyrae: Theory versus observation

Zoltán Kolláth, J. Robert Buchler, Michael Feuchtinger

Research output: Contribution to journalArticle

8 Citations (Scopus)


The luminosities, effective temperatures, and metallicities that are derived empirically by Kovács & 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 modeling leads us to conclude that the disagreement appears irreconcilable.

Original languageEnglish
Pages (from-to)468-473
Number of pages6
JournalAstrophysical Journal
Issue number1 PART 1
Publication statusPublished - Sep 1 2000


  • Stars: abundances
  • Stars: distances
  • Stars: fundamental parameters
  • Stars: horizontal-branch
  • Stars: oscillations
  • Stars: variables: other

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Kolláth, Z., Buchler, J. R., & Feuchtinger, M. (2000). RR Lyrae: Theory versus observation. Astrophysical Journal, 540(1 PART 1), 468-473. https://doi.org/10.1086/309330