Analysis of temperature structure of spotted stars

In this work, we consider applications of MLI (Matrix Light-Curve Inversion) technique for surface reconstruction of spotted stars. Unlike the traditional method of light-curve modeling, this method doesn't need any assumptions about the number of spots and their shapes. For realization and testing of MLI technique, we have developed a computer program that makes it possible to create models of spotted stellar surfaces, to draw noisy synthetic light curves in different photometric systems, and to reconstruct surfaces based on the obtained and observed light curves. This technique has been tested for various models of spotted surfaces. We have been applied this method for surface reconstruction of the secondary component of DE CVn system. Photometric data were obtained by RTT-150 telescope (TUBITAC observatory) in 2009. Intensity and temperature maps of the surface of the secondary component of DE CVn system have been deduced. Two large regions of spottedness have been found.