Fitting Blazhko light curves

Abstract

The correct amplitude and phase modulation formalism of the Blazhko modulation is given. The harmonic order dependent amplitude and phase modulation form is equivalent with the Fourier decomposition of multiplets. The amplitude and phase modulation formalism used in electronic transmission technique as introduced by Benkő, Szabó and Paparó (2011, MNRAS 417, 974) for Blazhko stars oversimplifies the amplitude and phase modulation functions thus it does not describe the light variation in full detail. The results of the different formalisms are compared and documented by fitting the light curve of a real Blazhko star, CM UMa.

8 pages, 5 figures. Accepted for publication in MNRAS

References in corpus (6)

• Kepler photometry of the prototypical Blazhko star RR Lyr: An old friend seen in a new light
• Blazhko RR Lyrae light curves as modulated signals
• An extensive photometric study of the Blazhko RR Lyrae star MW Lyr: I. Light curve solution
• An extensive photometric study of the Blazhko RR Lyrae star MW Lyr: II. Changes in the physical parameters
• Variable turbulent convection as the cause of the Blazhko effect - testing the Stothers model
• Equidistant frequency triplets in pulsating stars: The Combination Mode Hypothesis

Cited by in corpus (7)

• Metal Abundances, Radial Velocities and other Physical Characteristics for the RR Lyrae Stars in the Kepler Field
• Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2 - I. Binarity from proper motion anomaly
• Known Galactic field Blazhko stars
• Blazhko effect in the Galactic bulge fundamental mode RR Lyrae stars II: Modulation shapes, amplitudes and periods
• The SERMON project: 48 new field Blazhko stars and an investigation of modulation-period distribution
• On the connection between almost periodic functions and Blazhko light curves
• Is the Blazhko effect the beating of a near-resonant double-mode pulsation?