Corpus ID: 118295677

Discovery of Peculiar Double-Mode Pulsations and Period Doubling in KEPLER RRc Variables

@inproceedings{Moskalik2012DiscoveryOP,
  title={Discovery of Peculiar Double-Mode Pulsations and Period Doubling in KEPLER RRc Variables},
  author={Pawel Moskalik and Radosław Smolec and Katrien Kolenberg and Jan Nemec and Andrea Malaika Kunder and Merieme Chadid and Grzegorz Kopacki and Richard J. Szabo and Kepler WG13 members},
  year={2012}
}
  • Pawel Moskalik, Radosław Smolec, +6 authors Kepler WG13 members
  • Published 2012
  • Physics
  • We analyzed the Long Cadence photometry of 4 first overtone RR Lyr-type stars (RRc stars) observed by the KEPLER telescope. All studied variables are multiperiodic. The strongest secondary peak appears for f_2/f_1 = 1.58-1.63, or P_2/P_1 = 0.61-0.63. In each star we detect at least one subharmonic of f_2, either at ~1/2 f_2 or at ~3/2 f_2. The presence of subharmonics is a characteristic signature of a period doubling. 

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