The Unified Model in Nearby Seyfert Galaxies Through Integral Field Spectroscopy

Abstract

Active Galactic Nuclei (AGNs) are among the most intriguing extragalactic sources. Notwithstanding they have been studied since several decades, their internal structure is still a matter of debate. Indeed, large efforts have been made in testing the AGNs Unified Model, since several indications seem to run against the Type 1 - Type 2 dichotomy of AGNs caused by a pure inclination effect. Other mechanisms are likely to play important roles in switching on and fueling the central engine. An effective way to investigate the presence and effects of such additional features in the frame of the Unified Model, is to spectroscopically study the stellar and gaseous nuclear environment in nearby AGNs, in particular Seyfert 1, Seyfert 2 and intermediate type Seyfert. The integral field spectroscopy technique offers a powerful tool to perform these aims. During the last decade several authors, including us, have demonstrated the great capabilities and advantages of using 3D data in exploring the physical properties of extended nuclear and extranuclear galactic regions. In this contribution we present new integral field data of three nearby Seyfert galaxies : Mrk 3, Mrk 1157 and Ark 564. Data have been collected at the SAO 6m telescope (SAO-RAS, Russia) with the Multi-Pupil Fiber Spectrograph.