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For nine Mira-type stars (o Cet, R Leo, S Car, U Her, X Oph, R Aql, RR Aql, SOri, S Scl,) and one semi-regular star (L2 Pup), the mean light curves havebeen obtained. The initial values of the brightness (observations) were fittedby a trigonometric polynomial of the statistically optimal order. The Fouriercoefficients and the additional parameters (degree of the trigonometricpolynomial, amplitude of the brightness, the maximal slope of ascending anddescending branch, semi-amplitudes and initial epochs for the brightnessmaximum (minimum magnitude) of each harmonic contribution, etc., were given inthe tables reported earlier (Kudashkina, 2015). In this study, we have receivedseveral interesting correlations between these parameters in the bands H and K.It was particularly noted the anomalous position on the figures of the star XOph. The mean light curves of the investigated stars are commonly symmetric inthe near infrared region (H and K).

The mean light curves of the Mira-type stars in the H- and K-bands