Lyashko D. Echelle spectra of peculiar stars and an automatic complex of their processing

The thesis deals with a creation of the automatic technique of echelle spectra processing and an investigation on its basis of the peculiar stars. The principal stages of extraction and possibilities of their automatic treatment are shown. For normalization of the spectra on a continuum the image of flat field is used. This approach allows one to take into account the hardware distortions due to echelle spectrograph and then to automate the process of the continuum drawing. This approach also allows one to solve the main problems such as normalization of spectra on a continuum within the orders which contain the hydrogen lines. The method is elaborated that enables one to create the echelle spectrum image of the artificial star with the aim of control of the main steps of automate reduction. A number of the new astrophysical results basing on accuracy and efficiency of developed techniques are obtained.