3{sigma} hard sample of XMDS survey

Our goal is to probe the populations of obscured and unobscured AGN investigating their optical-IR and X-ray properties as a function of X-ray flux, luminosity and redshift...本研究旨在探测被遮挡与无遮挡活动星系核（Active Galactic Nucleus，AGN）的族群，并分析其光学-红外及X射线波段的物理性质随X射线流量、光度与红移的变化规律。