Blazhko Effect in the Rr-Lyrae Variables as a Result of Double Mode Pulsation

Details Blazhko Effect in the Rr-Lyrae Variables as a Result of Double Mode Pulsation Blazhko Effect in the Rr-Lyrae Variables as a Result of Double Mode Pulsation

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ssrv...27..511b&link_type=abstract

Space Science Reviews, Volume 27, Issue 3-4, pp. 511-517

Computer Science

4

Scientific paper

On the basis of a frequency analysis of light variations of AR Her a double-mode pulsation is proposed as an explanation of the Blazhko effect. The analysis revealed a number of components, which can all be interpreted as a result of nonlinear superposition of the fundamental mode, and a mode with period P = 1/(2/P0 + 1/PB) ≃ PB/2, where P0 = 0\underset{raise0.3emsmashriptscriptstyle\cdot}{d}470 and PB = 31\underset{raise0.3emsmashriptscriptstyle\cdot}{d}55 denote the fundamental and the Blazhko effect periods, respectively. The P ≃ P0/2 mode can be identified as the second or the third radial overtone. In both these cases the “beat” masses derived from a comparison of the calculated (nonadiabatic) and observed period ratios for RR Lyrae variables with Blazhko effect are different from their evolutionary masses.

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