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26 April 2024

» arxiv » 1108.5683

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Non-Blazhko RR Lyrae Stars Observed with the KEPLER Space Telescope
J.M. Nemec ; R. Smolec ; J.M. Benko ; P. Moskalik ; K. Kolenberg ; R. Szabo ; D.W. Kurtz ; S. Bryson ; E. Guggenberger ; M. Chadid ; Y.-B. Jeon ; A. Kunder ; A.C. Layden ; K. Kinemuchi ; L.L. Kiss ; E. Poretti ; J. Christensen-Dalsgaard ; H. Kjeldsen ; D. Caldwell ; V. Ripepi ; A. Derekas ; J. Nuspl ; F.Mullally ; S.E. Thompson ; W.J. Borucki ;
Date:	29 Aug 2011
Abstract:	This paper summarizes the main results of our recent study of the non-Blazhko RR Lyrae stars observed with the Kepler space telescope. These stars offer the opportunity for studying the stability of the pulsations of RR Lyrae stars and for providing a reference against which the Blazhko RR Lyrae stars can be compared. Of particular interest is the stability of the low-dispersion (sigma < 1mmag) light curves constructed from ~18,000 long-cadence (30-min) and (for FN Lyr and AW Dra) the ~150,000 short-cadence (1-min) photometric data points. Fourier-based [Fe/H] values and other physical characteristics are also derived. When the observed periods are compared with periods computed with the Warsaw non-linear convective pulsation code better agreement is achieved assuming pulsational L and M values rather than the (higher) evolutionary L and M values.
Source:	arXiv, 1108.5683
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