New spectral decomposition method for QSOs using IFU data.

Quasi-stellar objects (QSO) are very luminous active galactic nuclei (AGN), which have been explored broadly to understand the connection between AGN and the host galaxy. However, despite the last decade's efforts, several questions regarding this connection remain unanswered. This is mainly because their study requires a robust deblending of the AGN and host galaxy light.Integral Field Spectroscopic (IFS) can resolve both the integrated and spatially resolved spectroscopic properties of galaxies. Several techniques have been developed for this purpose; however, their algorithms are complex and require several steps. In this talk, I will present a novel, straightforward technique for removing the AGN and revealing the host galaxy's 3D information. This technique will be used for the scientific preparation of the exploitation of the High Angular Resolution Monolithic Optical and Near-infrared Integral field spectrograph (HARMONI), which is the first light instrument of the Extremely Large Telescope (ELT). Consequentially, I will also introduce the main features of this instrument.