Abstract
We analyse simultaneously stellar populations (SPs) in active galactic nuclei (AGNs), AGN featureless continuum and emission lines, using NBurst code, adopted to fit the total spectrum of an active galaxy. In this paper we present the investigations of the accuracy, limitations and applications of the code in a research of stellar populations in narrow emission line galaxies (Type 2). To validate the method, we simulated several thousands of line-of-sight integrated spectra of Type 2 galaxies. We fitted simulated spectra with NBurst and found that code can extract SP and AGN parameters with a high precision. Additionally, we used the method to investigate SP and AGN spectral parameters of a sample of Type 2 AGNs. Especially we investigate the properties of stellar population in the first kiloparsec.
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