The model parameters of the mean light curves of the variable red giant stars in the near infrared colour-bands and compare them with the visual mean light curves

TL;DR

This study models and compares the mean light curves of variable red giant stars in near-infrared and visual bands, analyzing Fourier parameters and brightness variations to understand their pulsation characteristics.

Contribution

It provides a detailed comparison of infrared and visual mean light curves and their Fourier parameters for variable red giant stars, using observational data.

Findings

Infrared and visual light curves show distinct Fourier parameters.

Periodogram analysis reveals differences in brightness variation patterns.

Fourier coefficients characterize the pulsation modes of the stars.

Abstract

The observational data of the near infrared bands (H and K) have been used for the modeling mean light curves. Also the visual observational data have been fitted the same. The infrared and visual mean light curves were compared. All parameters and Fourier-coefficients of the mean light curves were obtained. The periodogram analysis of the variation of the brightness have been carried out.