Speaker
Description
Multiwavelength information is crucial for a complete understanding of the Universe. In the era of big data, large-number statistics is the ideal tool to characterize the demography of galaxy populations and understand the complex phenomena involved in galaxy evolution. Within SPIDERS (Spectroscopic Identification of ERosita Sources), we selected eROSITA X-ray sources to be observed in the optical domain by SDSS-V. This survey allows us to compare physical properties obtained from optical spectra and X-rays, and I will present the results of the detailed analysis for ~10 000 Active Galactic Nuclei (AGN) at the eFEDS field. This is one of the largest uniformly selected X-ray AGN samples with systematic optical spectroscopic data. We will study the relation between the black hole growth and the host galaxy by comparing properties such as black hole mass, accretion rate, luminosity, outflow rates, column density, etc. For a subsample of AGN with redshift lower than 1, we will present results of accurate AGN-host spectral decomposition that reveal properties from the host galaxy and their connection with AGN. Some insights about AGN spectra will also come from the challenges of performing the fit of this X-ray-selected sample.
