Title: Discovery of Peculiar Double-Mode Pulsations and Period Doubling in KEPLER RRc Variables
Authors: Moskalik, P.
Smolec, R.
Kolenberg, Katrien
Nemec, J.
Kunder, A.
Chadid, M.
Kopacki, G.
Szabó, R.
KASC WG#13 members (KEPLER - RR Lyrae Stars)
Issue Date: 2013
Publisher: Springer-Verlag
Host Document: Stellar Pulsations: Impact of New Instrumentation and New Insights pages:291-292
Series Title: Astrophyiscs & Space Science Proceedings
Conference: Stellar Pulsations Impact of New Instrumentation and New Insights; Stellar Pulsation Meeting edition:20 location:Granada, Spain date:5-9 September 2011
Article number: poster number 34
Abstract: 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.
Publication status: published
KU Leuven publication type: IC-p
Appears in Collections:Institute of Astronomy

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